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1
Q

A) Rotate the loop about an axis that is parallel to the field and passes through the center of the loop.
B) Increase the strength of the magnetic field.
C) Decrease the area of the loop.
D) Decrease the strength of the magnetic field.
E) Rotate the loop about an axis that is perpendicular to the field and passes through the center of the loop.

A

A) Rotate the loop about an axis that is -parallel- to the field and passes through the center of the loop.

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2
Q 
A)  T  m/s
B)  V  m2/s
C)  J/s
D)  A  
E)  T  m
A

D) A x Omega

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3
Q

A) decreasing the area of the loop
B) decreasing the magnitude of the magnetic field
C) increasing the magnitude of the magnetic field
D) rotating the loop through 90∞ about an axis in the plane of the paper
E) all of the above

A

E) all of the above

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4
Q 
A)  toward the right
B)  toward the left
C)  parallel to the long axis of the bar
D)  into the page
E)  out of the page
A

E) out of the page

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5
Q 
A)  0.38 m/s
B)  0.90 m/s
C)  2.6 m/s
D)  6.5 m/s
E)  8.7 m/s
A

D) 6.5 m/s

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6
Q 
A)  1.1 V
B)  0.27 V
C)  0.076 V
D)  9.1 ◊ 10ñ5 V
E)  This cannot be determined without knowing the orientation of the rod relative to the magnetic field.
A

E) This cannot be determined without knowing the orientation of the rod relative to the magnetic field.

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7
Q 
A)  0.049 Wb
B)  0.098 Wb
C)  0.24 Wb
D)  0.30 Wb
E)  zero Wb
A

D) 0.30 Wb

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8
Q 
A)  1.08 ◊ 10ñ4 Wb
B)  7.11 ◊ 10ñ5 Wb
C)  2.88 ◊ 10ñ5 Wb
D)  1.92 ◊ 10ñ5 Wb
E)  3.30 ◊ 10ñ6 Wb
A

A) 1.08 ◊ 10ñ4 Wb

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9
Q 
A)  3.1 ◊ 10ñ4 V
B)  6.3 ◊ 10ñ4 V
C)  1.2 ◊ 10ñ3 V
D)  5.4 ◊ 10ñ3 V
E)  3.1 V
A

D) 5.4 ◊ 10ñ3 V

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10
Q 
A)  0.42 T
B)  0.75 T
C)  0.87 T
D)  1.2 T
E)  1.9 T
A

E) 1.9 T

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11
Q 
A)  1.8 ◊ 10ñ5 Wb
B)  9.9 ◊ 10ñ5 Wb
C)  3.6 ◊ 10ñ4 Wb
D)  7.0 ◊ 10ñ4 Wb
E)  2.2 ◊ 10ñ3 Wb
A

C) 3.6 ◊ 10ñ4 Wb

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12
Q 
A)  0.053 s
B)  0.13 s
C)  12 s
D)  6.4 s
E)  7.3 s
A

E) 7.3 s

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13
Q 
A)  ñ18 mV
B)  ñ49 mV
C)  ñ92 mV
D)  ñ140 mV
E)  ñ180 mV
A

A) ñ18 mV

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14
Q 
A)  0.43 V
B)  0.65 V
C)  0.014 V
D)  0.027 V
E)  0.038 V
A)  2.8 ◊ 10ñ3 A, clockwise
B)  4.5 ◊ 10ñ3 A, clockwise
C)  4.5 ◊ 10ñ3 A, counterclockwise
D)  9.0 ◊ 10ñ3 A, clockwise
E)  9.0 ◊ 10ñ3 A, counterclockwise
A)  8.6 ◊ 10ñ3 V
B)  9.8 ◊ 10ñ2 V
C)  2.7 ◊ 10ñ2 V
D)  5.4 ◊ 10ñ2 V
E)  6.4 ◊ 10ñ2 V
A)  1.8 ◊ 10ñ2 W
B)  3.6 ◊ 10ñ2 W
C)  3.8 ◊ 10ñ3 W
D)  2.7 ◊ 10ñ4 W
E)  4.9 ◊ 10ñ4 W
A

C) 0.014 V

D) 9.0 ◊ 10ñ3 A, clockwise

C) 2.7 ◊ 10ñ2 V

E) 4.9 ◊ 10ñ4 W

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15
Q

Conducting Loop:
A) There will be no induced emf and no induced current.
B) There will be an induced emf, but no induced current.
C) There will be an induced current that is clockwise around the loop.
D) There will be an induced current that is counterclockwise around the loop.
E) There will be an induced electric field that is clockwise around the loop.

Non-conducting Loop:
A) There will be no induced emf and no induced current.
B) There will be a counterclockwise induced emf, but no induced current.
C) There will be a clockwise induced emf, but no induced current.
D) There will be a clockwise induced current in the loop.
E) There will be a counterclockwise induced current in the loop.

A

D) There will be an induced current that is counterclockwise around the loop.

B) There will be a counterclockwise induced emf, but no induced current.

Both Counterclockwise

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16
Q

A) As the ring falls, an induced current will flow counterclockwise as viewed by the observer.
B) As the ring falls, an induced current will flow clockwise as viewed by the observer.
C) As the ring falls, there will be an induced magnetic field around the ring that appears counterclockwise as viewed by the observer.
D) As the ring falls, there will be an induced magnetic field around the ring that appears clockwise as viewed by the observer.
E) Since the magnet is stationary, there will be no induced current in the ring.

A

A) As the ring falls, an induced current will flow counterclockwise as viewed by the observer.

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17
Q

A) The current in the lower loop will decrease.
B) The current in the lower loop will increase.
C) The current in the lower loop will not change.
D) The current in the lower loop will also drop to zero.
E) The current in the lower loop will reverse its direction.

A

B) The current in the lower loop will increase.

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18
Q

Sheet of copper, constant V
A) The magnetic field points to the right.
B) The magnetic field points to the left.
C) The magnetic field points into the paper.
D) The magnetic field points out of the paper.
E) The direction of the magnetic field cannot be determined from the information given.

A

D) The magnetic field points out of the paper.

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19
Q
  1. Which one of the following statements concerning this situation is true?
    A) The temperature of the circuit remains constant.
    B) The induced current flows clockwise around the circuit.
    C) Since the circuit moves with constant speed, the force F does zero work.
    D) If the circuit were replaced with a wooden loop, there would be no induced emf.
    E) As the circuit moves through the field, the field does work to produce the current.
A)  1.5 m/s
B)  4.6 m/s
C)  6.4 m/s
D)  7.8 m/s
E)  9.0 m/s
A

B) The induced current flows clockwise around the circuit.

B) 4.6 m/s

20
Q 
DIAGRAM WITH A CRANK
A)  28 rad/s
B)  50 rad/s
C)  130 rad/s
D)  200 rad/s
E)  490 rad/s
A

D) 200 rad/s

21
Q 
A)  32.3 V
B)  44.7 V
C)  52.5 V
D)  89.4 V
E)  152 V
A

B) 44.7 V

22
Q 
SINUSOIDAL GRAPH: 
A)  0.16 rad/s
B)  0.30 rad/s
C)  0.52 rad/s
D)  0.80 rad/s
E)  1.26 rad/s
A)  1.25 s
B)  2.50 s
C)  3.75 s
D)  5.00 s
E)  6.25 s
A)  0.5 T
B)  2.4 T
C)  3.0 T
D)  7.5 T
E)  18.8 T
A

E) 1.26 rad/s

D) 5.00 s

C) 3.0 T

23
Q 
current INCREASES with time, relates emf and increasing current?
A)  resistance of the loop
B)  capacitance of the loop
C)  self-inductance of the loop
D)  power dissipated by the loop
E)  mutual inductance of the loop
A

C) self-inductance of the loop

24
Q

solenoid current decreased to 1/2, which is true concerning self-inductance?
A) The self-inductance does not change.
B) The self-inductance increases by a factor of two.
C) The self-inductance decreases by a factor of two.
D) The self-inductance increases by a factor of four.
E) The self-inductance decreases by a factor of four.

A

A) The self-inductance does not change.

25
Q 
A)  2.11 ◊ 10ñ8 J
B)  3.78 ◊ 10ñ8 J
C)  1.09 ◊ 10ñ7 J
D)  7.98 ◊ 10ñ7 J
E)  6.60 ◊ 10ñ6 J
A

D) 7.98 ◊ 10ñ7 J

26
Q 
A)  0.10 J
B)  2.8 J
C)  0.18 J
D)  28 J
E)  0.36 J
A

C) 0.18 J

27
Q

One Henry

A

N x m x s2/C2

28
Q 
A)  0.33 H
B)  0.60 H
C)  1.5 H
D)  3.0 H
E)  5.0 H
A

A) 0.33 H

29
Q 
2 Coil DIAGRAM:
A)  5.8 ◊ 10ñ4 V
B)  1.7 ◊ 10ñ3 V
C)  3.5 ◊ 10ñ3 V
D)  1.5 ◊ 10ñ2 V
E)  2.1 ◊ 10ñ2 V
A

E) 2.1 ◊ 10ñ2 V

30
Q 
A)  7.4 J
B)  4.6 J
C)  1.6 J
D)  5.1 J
E)  3.4 J
A

A) 7.4 J

31
Q 
*5 Part Question: 0.100m solenoid DIAGRAM 
A)  2.95 ◊ 10ñ2 Wb
B)  7.28 ◊ 10ñ2 Wb
C)  2.95 ◊ 10ñ4 Wb
D)  4.38 ◊ 10ñ4 Wb
E)  5.92 ◊ 10ñ4 Wb
A)  1.8 ◊ 10ñ4  H
B)  2.4 ◊ 10ñ4  H
C)  3.6 ◊ 10ñ4  H
D)  4.4 ◊ 10ñ4  H
E)  5.9 ◊ 10ñ4  H
A)  0.7 ◊ 10ñ3  V
B)  1.4 ◊ 10ñ3  V
C)  2.8 ◊ 10ñ3  V
D)  5.6 ◊ 10ñ3  V
E)  zero volts
WHEN PERPENDICULAR
A)  0.7 ◊ 10ñ4 V
B)  1.4 ◊ 10ñ4 V
C)  2.8 ◊ 10ñ4 V
D)  5.6 ◊ 10ñ4 V
E)  zero volts
A)  60 V
B)  98 V
C)  130 V
D)  180 V
E)  250 V
A

E) 5.92 ◊ 10ñ4 Wb

B) 2.4 ◊ 10ñ4 H

B) 1.4 ◊ 10ñ3 V

E) zero volts (WHEN PERPENDICULAR)

C) 130 V

32
Q

*7 Part Question: 2 coils, one small, one large:
44. Immediately after the switch S is closed, which one of the following statements is true?
A) An induced current will flow from right to left in R.
B) An induced current will flow from left to right in r.
C) A magnetic field that points toward B appears inside coil 1.
D) An induced magnetic field that points toward B appears inside coil 2.
E) A current will pass through r, but there will be no current through R.

  1. Assume the switch S has been closed for a long time. Which one of the following statements is true?
    A) An induced current will flow from right to left in R.
    B) An induced current will flow from left to right in r.
    C) A magnetic field that points toward B appears inside coil 1.
    D) An induced magnetic field that points toward B appears inside coil 2.
    E) A current will pass through r, but there will be no current through R.

Question Concerning S, 1, and B

A

A) An induced current will flow from right to left in R.

E) A current will pass through r, but there will be no current through R.

D) There is an induced current in R that flows from right to left.

33
Q

*7 Part Question: 2 coils, one small, one large:

A

The remaining 4 questions have B in their answers

34
Q

A) The induced current in the ring is an alternating current.
B) The temperature of the ring will increase.
C) At any instant, the direction of the induced current in the ring is in the same direction as that in the coil.
D) The induced magnetic field in the ring may by directed either upward or downward at an instant when the direction of the magnetic field generated by the current in the coil is upward.
E) The ring may remain suspended at the position shown with no vertical movement of its center of mass.

A

C) At any instant, the direction of the induced current in the ring is in the same direction as that in the coil.

35
Q 
Ratio: 
A)  5.6
B)  4.2
C)  0.24
D)  0.18
E)  0.12
A

C) 0.24

36
Q

Which statement is false?
A) Their operation makes use of mutual induction.
B) They are an application of Faraday’s and Lenz’s laws.
C) A transformer can function with either an ac current or a steady dc current.
D) A transformer that steps down the voltage, steps up the current.
E) A transformer that steps up the voltage, steps down the current.

A

C) A transformer can function with either an ac current or a steady dc current.

37
Q 
A)  40
B)  80
C)  100
D)  400
E)  4000
A

B) 80

38
Q

P: 450 turns, S: 30 turns
A) This is a step-up transformer.
B) The turns ratio is 15 for this transformer.
C) The ratio of the voltages Vs / Vp is 15 for this transformer.
D) The ratio of the currents Is / Ip is 0.067 for this transformer.
E) The power delivered to the secondary must be the same as that delivered to the primary.

A

E) The power delivered to the secondary must be the same as that delivered to the primary.

39
Q 
A)  3.8 A
B)  5.2 A
C)  6.4 A
D)  7.0 A
E)  7.5 A
A

A) 3.8 A

40
Q 
power lost 
A)  0.47 %
B)  0.41 %
C)  0.34 %
D)  0.23 %
E)  0.12 %
A

E) 0.12 %

41
Q

With chart referring to Diagram, regarding change in the system and direction of current through R:

A)  12.0 T/s
B)  18.8 T/s
C)  24.0 T/s
D)  37.7 T/s
E)  49.2 T/s
A

Answer: the only option that has “B” in it

A) 12.0 T/s

42
Q

2 Diagrams in DIAGRAM, circle and line graph:

CHART: concerning time and induced emf

A

Answer: largest option

9s 10V, counterclockwise

43
Q 
DIAGRAM: loop pulled with a force F
A)  zero volts
B)  0.77 V
C)  1.4 V
D)  4.9 V
E)  9.6 V
A)  0.048 A
B)  0.024 A
C)  7.2 ◊ 10ñ3 A
D)  3.8 ◊ 10ñ3 A
E)  zero amperes
A)  1.3 ◊ 10ñ4 N
B)  2.1 ◊ 10ñ4 N
C)  3.7 ◊ 10ñ4 N
D)  6.8 ◊ 10ñ4 N
E)  9.0 ◊ 10ñ4 N
A

B) 0.77 V

D) 3.8 ◊ 10ñ3 A

C) 3.7 ◊ 10ñ4 N

44
Q

*5 PART QUESTION DIAGRAM:
A loop with a resistance of 4.0  is pushed to the left at a constant speed

 A)  to the left
B)  to the right
C)  out of the paper
D)  into the paper
E)  toward the top of the page
A)  2.0 A
B)  3.5 A
C)  4.6 A
D)  7.2 A
E)  11 A
A)  2.0 V
B)  4.0 V
C)  8.0 V
D)  14 V
E)  16 V
A)  2.2 T
B)  3.5 T
C)  6.4 T
D)  7.0 T
E)  9.1 T
A)  130 W
B)  96 W
C)  32 W
D)  49 W
E)  8.0 W
A

D) into the paper

if you see “toward the top of the page,” you know it’s into the paper

B) 3.5 A

D) 14 V

B) 3.5 T

D) 49 W

45
Q 
DIAGRAM: 2 pictures, circle and squished circle 
A)  1.2 ◊ 10ñ1 V
B)  1.8 ◊ 10ñ2 V
C)  1.8 ◊ 102 V
D)  5.9 ◊ 10-2 V
E)  5.9 ◊ 102 V
A)  3.6 ◊ 10ñ3 W
B)  8.7 ◊ 10-4 W
C)  8.7 ◊ 104 W
D)  8.1 ◊ 105 W
E)  8.1 ◊ 10ñ5 W
A

D) 5.9 ◊ 10-2 V

B) 8.7 ◊ 10-4 W

46
Q 
71.  Which one of the following phrases best describes the direction of the induced magnetic field generated by the current induced in the loop while the loop is being stretched?
A)  clockwise
B)  counterclockwise
C)  into the page
D)  out of the page
E)  The induced field is zero.
A

C) into the page

Sociology (7 decks)

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