Answers25-26 TX-Physics B-CRLab: Electromagnetic Induction

Lab: Electromagnetic Induction — Cumulative exam Answers

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A circuit is built based on this circuit diagram.

Question illustration
A
0.61 Ω
B
1.6 Ω
C
7.5 Ω
D
18 Ω
44
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Which factors affect the strength of a magnetic field around a current-carrying wire? Check all that apply.the type of metal of the wirethe amount of the currentthe direction of the currentthe temperature of the wirethe distance from the wire

A
the type of metal of the wire
B
the amount of the current
C
the direction of the current
D
the temperature of the wire
E
the distance from the wire
45

The ray diagram shows a vase that is placed beyond the center of curvature of a concave mirror.

Question illustration
A
It will be larger than the vase and upright.
B
It will be smaller than the vase and upright.
C
It will be larger than the vase and inverted.
D
It will be smaller than the vase and inverted.
47

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field?

A
F = |q|vBcos
Option A
B
F = |q|vBsin
Option B
C
F = |q|Bcos
Option C
D
F = |q|Bsin
Option D
48

Barbara places an object in front of a mirror. The mirror produces an image that is inverted, real, and smaller than the object.Which kind(s) of mirror could Barbara be using?

A
convex, because concave and plane mirrors produce only virtual images
B
concave, because plane and convex mirrors produce only upright virtual images
C
concave or convex, because both types of mirrors produce images that are inverted and real
D
convex or plane, because both types of mirrors produce an image that is smaller than the object
49

Before beginning an experiment, Mrs. Wilson warns her science class not to drop the bar magnets on the floor.

A
The magnet might lose its magnetism.
B
The magnet might make a startling noise.
C
The magnet might become stuck to the floor.
D
The magnet might cause the floor to become magnetic.
50

A 50 kg boy runs and jumps with a forward velocity of 1.5 m/s into a 125 kg stationary boat.

A
0.43 m/s, forward
B
0.43 m/s, backward
C
1.1 m/s, forward
D
1.1 m/s, backward

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