AP (Advanced Placement) Physics(B-C): Questions 331 - 332 of 921

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Question number: 331

» Thermodynamics

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MCQ▾

Question

Chamber , a very large reservoir of gas at a temperature of , comes into thermal contact with chamber , a very large reservoir of gas at . During a certain time interval, of heat transfers from chamber to chamber . Which of the following statements is true regarding entropy in this situation?

Choices

Choice (5)Response

a.

The entropy changes of chambers and are equal.

b.

The entropy change of chamber is greater than the entropy change of chamber .

c.

Once the chambers come to equilibrium, there has been not net change in entropy.

d.

The entropy change of chamber is greater than the entropy change of chamber .

e.

Question does not provide sufficient data or is vague

Question number: 332

» Magnetic Field & Electromagnetism

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MCQ▾

Question

In the illustration, a hollow coil of coated wire is connected to a galvanometer that measures small electric currents. A strong magnet moves to the left into the coil and through the coil, then exits the coil on the left. What would be the readings on the galvanometer?

A solenoid connected to Galvanometer

A Solenoid Connected to Galvanometer

Choices

Choice (5)Response

a.

The galvanometer would register a current in 1 direction as the magnet enters the coil and then read zero as the magnet moves through and exits the coil.

b.

The galvanometer would register a current in 1 direction the entire time, as the magnet enters the coil, moves through the coil, and exits the coil decreasing to zero as the magnet moves far away.

c.

No current would be produced in the coil.

d.

The galvanometer would register a current in 1 direction as the magnet enters the coil and register a current in the opposite direction as the magnet leaves the coil.

e.

None of the above

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