Question 1

If the electric field just outside a thin conducting sheet is equal to 1.5 N/C,determine the surface charge density on the conductor.

Accepted Answer

A)  53 pC/m2
B)  27 pC/m2
C)  35 pC/m2
D)  13 pC/m2
E)  6.6 pC/m2F) B) and C)
G) None of the above D

Question 2

A positive point charge q is placed off center inside an uncharged metal sphere insulated from the ground as shown.Where is the induced charge density greatest in magnitude and what is its sign?

Accepted Answer

A)  A;negative.
B)  A;positive.
C)  B;negative.
D)  B;positive.
E)  C;negative.F) A) and B)
G) A) and E)

Question 3

A long cylindrical shell (radius = 2.0 cm) has a charge uniformly distributed on its surface.If the magnitude of the electric field at a point 8.0 cm radially outward from the axis of the shell is 85 N/C,how much charge is distributed on a 2.0-m length of the charged cylindrical surface?

Accepted Answer

A)  0.38 nC
B)  0.76 nC
C)  0.19 nC
D)  0.57 nC
E)  0.98 nCF) A) and D)
G) B) and C) B

Question 4

Each of two small non-conducting spheres is charged positively,the combined charge being 40  μ\muμ C.When the two spheres are 50 cm apart,each sphere is repelled from the other by a force of magnitude 2.0 N.Determine the magnitude of the smaller of the two charges.

Accepted Answer

A)  1.4  μ\muμ C
B)  1.1  μ\muμ C
C)  2.0  μ\muμ C
D)  3.3  μ\muμ C
E)  17  μ\muμ C F) None of the above
G) A) and D)

Question 5

An alpha particle (charge = +2e)is sent at high speed toward a gold nucleus (charge +79e).What is the electrical force acting on the alpha particle when it is at a distance of 2 *10 - 14 m away from the gold nucleus? (e = 1.6 *10 - 19 C)

Accepted Answer

The answer of An alpha particle (charge = +2e)is sent...

Question 6

Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m,respectively.If q = -40 pC and Q = +30 pC,determine the net flux through a spherical surface (radius = 1.0 m) centered on the origin.

Accepted Answer

A)  -9.6 N . m2/C
B)  -6.8 N . m2/C
C)  -8.5 N .m2/C
D)  -4.5 N.m2/C
E)  -1.1 N .m2/CF) A) and E)
G) B) and D)

Question 7

A particle (q = 4.0 mC,m = 50 g) has a velocity of 25 m/s in the positive x direction when it first enters a region where the electric field is uniform (60 N/C in the positive y direction) .What is the speed of the particle 5.0 s after it enters this region?

Accepted Answer

A)  49 m/s
B)  35 m/s
C)  32 m/s
D)  44 m/s
E)  24 m/sF) D) and E)
G) A) and B)

Question 8

Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane.A charge of uniform density (5.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 1.0 m.

Accepted Answer

A)  0.45 kN/C
B)  0.17 kN/C
C)  0.28 kN/C
D)  0.73 kN/C
E)  0.62 kN/CF) None of the above
G) All of the above

Question 9

A particle (m = 50 g,q = 5.0  μ\muμ C) is released from rest when it is 50 cm from a second particle (Q = -20  μ\muμ C) .Determine the magnitude of the initial acceleration of the 50-g particle.

Accepted Answer

A)  54 m/s2
B)  90 m/s2
C)  72 m/s2
D)  65 m/s2
E)  36 m/s2 F) A) and E)
G) B) and E)

Question 10

A particle (mass = 5.0 g,charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = -5.5 N/C,Ey = Ez = 0.If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s,vy = vz = 0,what is the distance from the origin to the particle at t = 2.0 s?

Accepted Answer

A)  60 m
B)  28 m
C)  44 m
D)  12 m
E)  88 mF) A) and E)
G) B) and D)

Question 11

An uncharged spherical conducting shell surrounds a charge -q at the center of the shell.Then charge +3q is placed on the outside of the shell.When static equilibrium is reached,the charges on the inner and outer surfaces of the shell are respectively

Accepted Answer

A)  +q,-q.
B)  -q,+q.
C)  +q,+2q.
D)  +2q,+q.
E)  +3q,0.F) B) and D)
G) C) and D)

Question 12

A uniformly charged rod (length = 2.0 m,charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle.What is the magnitude of the electric field at the center of the circle?

Accepted Answer

A)  62 N/C
B)  56 N/C
C)  50 N/C
D)  44 N/C
E)  25 N/CF) B) and C)
G) B) and E)

Question 13

Two charges of 15 pC and -40 pC are inside a cube with sides that are of 0.40-m length.Determine the net electric flux through the surface of the cube.

Accepted Answer

A)  +2.8 N. m2/C
B)  -1.1 N .m2/C
C)  +1.1 N. m2/C
D)  -2.8 N . m2/C
E)  -0.47 N . m2/CF) A) and D)
G) B) and C) D

Question 14

Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane.A charge of uniform density (3.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 3.0 m.

Accepted Answer

A)  0.79 kN/C
B)  0.17 kN/C
C)  0.62 kN/C
D)  0.34 kN/C
E)  0.28 kN/CF) A) and E)
G) B) and E)

Question 15

A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle.What is the magnitude of the electric field at the center of the circle along which the arc lies?

Accepted Answer

A)  81 N/C
B)  61 N/C
C)  71 N/C
D)  51 N/C
E)  25 N/CF) A) and B)
G) C) and E)

Question 16

Charge of uniform density (20 nC/m2) is distributed over a cylindrical surface (radius = 1.0 cm) ,and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m2.Determine the magnitude of the electric field at a point 4.0 cm from the symmetry axis of the two surfaces.

Accepted Answer

A)  0.45 kN/C
B)  1.0 kN/C
C)  0.73 kN/C
D)  0.56 kN/C
E)  2.3 kN/CF) A) and B)
G) None of the above

Question 17

A uniform electric field  E→I\overrightarrow { \mathbf { E } } _ { \mathrm { I } }EI​  is present in the region between infinite parallel plane plates A and B and a uniform electric field  E→II \overrightarrow { \mathbf { E } } _ { 	ext {II } }EII ​  is present in the region between infinite parallel plane plates B and C.When the plates are vertical,  E→I\overrightarrow { \mathbf { E } } _ { \mathrm { I } }EI​  is directed to the right and  E→II \overrightarrow { \mathbf { E } } _ { 	ext {II } }EII ​  to the left.The signs of the charges on plates A,B and C may be

Accepted Answer

A)  -,-,-.
B)  +,-,-.
C)  +,-,+.
D)  +,+,+.
E)  any one of the above. F) A) and B)
G) B) and D)

Question 18

If a = 3.0 mm,b = 4.0 mm,Q1 = 60 nC,Q2 = 80 nC,and q = 24 nC in the figure,what is the magnitude of the electric force on q? 1 = 60 nC,Q2 = 80 nC,and q = 24 nC in the figure,what is the magnitude of the electric force on q?   A) 2.7 N B) 1.9 N C) 2.3 N D) 1.5 N E) 0.52 N" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  2.7 N
B)  1.9 N
C)  2.3 N
D)  1.5 N
E)  0.52 NF) All of the above
G) B) and C)

Question 19

If Q = 16 nC,a = 3.0 m,and b = 4.0 m,what is the magnitude of the electric field at point P?

Accepted Answer

A)  33 N/C
B)  31 N/C
C)  24 N/C
D)  19 N/C
E)  13 N/CF) B) and C)
G) A) and C)

Question 20

A point charge Q is placed on the x axis at the origin.An identical point charge is placed on the x axis at x = -1.0 m and another at x = +1.0 m.If Q = 40  μ\muμ C,what is the magnitude of the electrostatic force on the charge at x = +1.0 m?

Accepted Answer

A)  29 N
B)  14 N
C)  11 N
D)  18 N
E)  7.0 N F) None of the above
G) A) and D)

Exam 19: Electric Forces and Electric Fields

If the electric field just outside a thin conducting sheet is equal to 1.5 N/C,determine the surface charge density on the conductor.

Correct Answer
verified
D

A positive point charge q is placed off center inside an uncharged metal sphere insulated from the ground as shown.Where is the induced charge density greatest in magnitude and what is its sign?

Correct Answer
verified

A long cylindrical shell (radius = 2.0 cm) has a charge uniformly distributed on its surface.If the magnitude of the electric field at a point 8.0 cm radially outward from the axis of the shell is 85 N/C,how much charge is distributed on a 2.0-m length of the charged cylindrical surface?

Correct Answer
verified
B

Each of two small non-conducting spheres is charged positively,the combined charge being 40 $\mu$ C.When the two spheres are 50 cm apart,each sphere is repelled from the other by a force of magnitude 2.0 N.Determine the magnitude of the smaller of the two charges.

Correct Answer
verified

An alpha particle (charge = +2e)is sent at high speed toward a gold nucleus (charge +79e).What is the electrical force acting on the alpha particle when it is at a distance of 2 10 ^- ¹⁴ m away from the gold nucleus? (e = 1.6 10 ^- ¹⁹ C)

Correct Answer
verified

Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m,respectively.If q = -40 pC and Q = +30 pC,determine the net flux through a spherical surface (radius = 1.0 m) centered on the origin.

Correct Answer
verified

A particle (q = 4.0 mC,m = 50 g) has a velocity of 25 m/s in the positive x direction when it first enters a region where the electric field is uniform (60 N/C in the positive y direction) .What is the speed of the particle 5.0 s after it enters this region?

Correct Answer
verified

Charge of a uniform density (8.0 nC/m²) is distributed over the entire xy plane.A charge of uniform density (5.0 nC/m²) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 1.0 m.

Correct Answer
verified

A particle (m = 50 g,q = 5.0 $\mu$ C) is released from rest when it is 50 cm from a second particle (Q = -20 $\mu$ C) .Determine the magnitude of the initial acceleration of the 50-g particle.

Correct Answer
verified

Correct Answer
verified

An uncharged spherical conducting shell surrounds a charge -q at the center of the shell.Then charge +3q is placed on the outside of the shell.When static equilibrium is reached,the charges on the inner and outer surfaces of the shell are respectively

Correct Answer
verified

A uniformly charged rod (length = 2.0 m,charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle.What is the magnitude of the electric field at the center of the circle?

Correct Answer
verified

Two charges of 15 pC and -40 pC are inside a cube with sides that are of 0.40-m length.Determine the net electric flux through the surface of the cube.

Correct Answer
verified
D

Charge of a uniform density (8.0 nC/m²) is distributed over the entire xy plane.A charge of uniform density (3.0 nC/m²) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 3.0 m.

Correct Answer
verified

A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle.What is the magnitude of the electric field at the center of the circle along which the arc lies?

Correct Answer
verified

Charge of uniform density (20 nC/m²) is distributed over a cylindrical surface (radius = 1.0 cm) ,and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m².Determine the magnitude of the electric field at a point 4.0 cm from the symmetry axis of the two surfaces.

Correct Answer
verified

Correct Answer
verified

If a = 3.0 mm,b = 4.0 mm,Q₁ = 60 nC,Q₂ = 80 nC,and q = 24 nC in the figure,what is the magnitude of the electric force on q?

Correct Answer
verified

If Q = 16 nC,a = 3.0 m,and b = 4.0 m,what is the magnitude of the electric field at point P?

Correct Answer
verified

A point charge Q is placed on the x axis at the origin.An identical point charge is placed on the x axis at x = -1.0 m and another at x = +1.0 m.If Q = 40 $\mu$ C,what is the magnitude of the electrostatic force on the charge at x = +1.0 m?

Correct Answer
verified

Exam 19: Electric Forces and Electric Fields

If the electric field just outside a thin conducting sheet is equal to 1.5 N/C,determine the surface charge density on the conductor.

Correct AnswerverifiedD

A positive point charge q is placed off center inside an uncharged metal sphere insulated from the ground as shown.Where is the induced charge density greatest in magnitude and what is its sign?

Correct AnswerverifiedShow Answer

A long cylindrical shell (radius = 2.0 cm) has a charge uniformly distributed on its surface.If the magnitude of the electric field at a point 8.0 cm radially outward from the axis of the shell is 85 N/C,how much charge is distributed on a 2.0-m length of the charged cylindrical surface?

Correct AnswerverifiedB

Each of two small non-conducting spheres is charged positively,the combined charge being 40 μ\muμ C.When the two spheres are 50 cm apart,each sphere is repelled from the other by a force of magnitude 2.0 N.Determine the magnitude of the smaller of the two charges.

Correct AnswerverifiedShow Answer

An alpha particle (charge = +2e)is sent at high speed toward a gold nucleus (charge +79e).What is the electrical force acting on the alpha particle when it is at a distance of 2 *10 - 14 m away from the gold nucleus? (e = 1.6 *10 - 19 C)

Correct AnswerverifiedShow Answer

Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m,respectively.If q = -40 pC and Q = +30 pC,determine the net flux through a spherical surface (radius = 1.0 m) centered on the origin.

Correct AnswerverifiedShow Answer

A particle (q = 4.0 mC,m = 50 g) has a velocity of 25 m/s in the positive x direction when it first enters a region where the electric field is uniform (60 N/C in the positive y direction) .What is the speed of the particle 5.0 s after it enters this region?

Correct AnswerverifiedShow Answer

Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane.A charge of uniform density (5.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 1.0 m.

Correct AnswerverifiedShow Answer

A particle (m = 50 g,q = 5.0 μ\muμ C) is released from rest when it is 50 cm from a second particle (Q = -20 μ\muμ C) .Determine the magnitude of the initial acceleration of the 50-g particle.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

An uncharged spherical conducting shell surrounds a charge -q at the center of the shell.Then charge +3q is placed on the outside of the shell.When static equilibrium is reached,the charges on the inner and outer surfaces of the shell are respectively

Correct AnswerverifiedShow Answer

A uniformly charged rod (length = 2.0 m,charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle.What is the magnitude of the electric field at the center of the circle?

Correct AnswerverifiedShow Answer

Two charges of 15 pC and -40 pC are inside a cube with sides that are of 0.40-m length.Determine the net electric flux through the surface of the cube.

Correct AnswerverifiedD

Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane.A charge of uniform density (3.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 3.0 m.

Correct AnswerverifiedShow Answer

A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle.What is the magnitude of the electric field at the center of the circle along which the arc lies?

Correct AnswerverifiedShow Answer

Charge of uniform density (20 nC/m2) is distributed over a cylindrical surface (radius = 1.0 cm) ,and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of -12 nC/m2.Determine the magnitude of the electric field at a point 4.0 cm from the symmetry axis of the two surfaces.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

If a = 3.0 mm,b = 4.0 mm,Q1 = 60 nC,Q2 = 80 nC,and q = 24 nC in the figure,what is the magnitude of the electric force on q?

Correct AnswerverifiedShow Answer

If Q = 16 nC,a = 3.0 m,and b = 4.0 m,what is the magnitude of the electric field at point P?

Correct AnswerverifiedShow Answer

A point charge Q is placed on the x axis at the origin.An identical point charge is placed on the x axis at x = -1.0 m and another at x = +1.0 m.If Q = 40 μ\muμ C,what is the magnitude of the electrostatic force on the charge at x = +1.0 m?

Correct AnswerverifiedShow Answer

Correct Answer
verified
D

Correct Answer
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Correct Answer
verified
B

Each of two small non-conducting spheres is charged positively,the combined charge being 40 $\mu$ C.When the two spheres are 50 cm apart,each sphere is repelled from the other by a force of magnitude 2.0 N.Determine the magnitude of the smaller of the two charges.

Correct Answer
verified

An alpha particle (charge = +2e)is sent at high speed toward a gold nucleus (charge +79e).What is the electrical force acting on the alpha particle when it is at a distance of 2 10 ^- ¹⁴ m away from the gold nucleus? (e = 1.6 10 ^- ¹⁹ C)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Charge of a uniform density (8.0 nC/m²) is distributed over the entire xy plane.A charge of uniform density (5.0 nC/m²) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 1.0 m.

Correct Answer
verified

A particle (m = 50 g,q = 5.0 $\mu$ C) is released from rest when it is 50 cm from a second particle (Q = -20 $\mu$ C) .Determine the magnitude of the initial acceleration of the 50-g particle.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
D

Charge of a uniform density (8.0 nC/m²) is distributed over the entire xy plane.A charge of uniform density (3.0 nC/m²) is distributed over the parallel plane defined by z = 2.0 m.Determine the magnitude of the electric field for any point with z = 3.0 m.

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

If a = 3.0 mm,b = 4.0 mm,Q₁ = 60 nC,Q₂ = 80 nC,and q = 24 nC in the figure,what is the magnitude of the electric force on q?

Correct Answer
verified

Correct Answer
verified

A point charge Q is placed on the x axis at the origin.An identical point charge is placed on the x axis at x = -1.0 m and another at x = +1.0 m.If Q = 40 $\mu$ C,what is the magnitude of the electrostatic force on the charge at x = +1.0 m?

Correct Answer
verified