AP (Advanced Placement) Physics(B-C): Questions 322 - 324 of 921

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Question number: 322

» Fluids & Solids

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MCQ▾

Question

A rock is tied to a spring scale and lowered into water in a graduated cylinder so that the rock is submerged and the spring scale reads . When the rock goes under water, the water level in the cylinder rises from the mark to the mark. What is the mass of the rock?

( of water)

Choices

Choice (5)Response

a.

b.

c.

d.

e.

None of the above

Question number: 323

» Magnetic Field & Electromagnetism

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MCQ▾

Question

In the illustration, a conducting wire loop moves at a constant velocity into a uniform magnetic field directed into the page. What happens at the instant the half loop is into the field?

A wire loop moves in magnetic field

A Wire Loop Moves in Magnetic Field

Choices

Choice (5)Response

a.

A clockwise current is induced in the loop.

b.

No current is induced in the loop.

c.

A counterclockwise current is induced in the loop.

d.

A current is induced in the wire only in the part of the loop that is inside the field.

e.

Question does not provide sufficient data or is vague

Question number: 324

» Electric Circuits

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MCQ▾

Question

A capacitor is charged to a potential difference of . Compare the energy stored in the same capacitor if it is charged to .

Choices

Choice (5)Response

a.

There is one half as much energy at .

b.

There is twice as much energy at .

c.

The energy is the same in both cases.

d.

There is four times as much energy at .

e.

All of the above

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