AP (Advanced Placement) Physics(B-C): Questions 235 - 237 of 921

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Question number: 235

» Electric Circuits

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MCQ▾

Question

In a small transformer, the input is marked and the output is marked . What is the input current, disregarding power loss to heating?

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

Question number: 236

» Magnetic Field & Electromagnetism

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MCQ▾

Question

In the illustration, a straight wire carrying a current of runs through a magnetic field of strength T. The length of wire in the field is . Determine the magnitude and direction of the force that the magnetic field exerts on the wire.

A straight wire runs through magnetic field

A Straight Wire Runs through Magnetic Field

Choices

Choice (5)Response

a.

Downward on the page

b.

Downward on the page

c.

Upward on the page

d.

Upward on the page

e.

All of the above

Question number: 237

» Work, Energy and Power

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MCQ▾

Question

Students want to determine the spring constant of a spring in a small pop-up toy, as shown in the illustration. They assume that the mass of the small plastic top of the toy is negligible. When the students put a glob of putty on the toy, then push the toy down and release it, the spring causes the toy to move an upward distance of above its equilibrium position. This is just one trial in a larger set of trials using varying amounts of putty. Using a preliminary calculation from this trial, what would the students predict for the spring constant?

A small plastic toy popping

A Small Plastic Toy Popping

Choices

Choice (5)Response

a.

b.

c.

d.

e.

All of the above

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