A Circuit Is Pulled with a 21-N Force Toward the Right

question 9

Multiple Choice

A circuit is pulled with a 21-N force toward the right to maintain a constant speed v.At the instant shown,the loop is partially in and partially out of a uniform magnetic field that is directed into the paper.As the circuit moves,a 4.0-A current flows through a 6.0- resistor.

-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.

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Definitions:

Tariff Protection

Economic policy of imposing duties on imports to protect domestic industries from foreign competition.

Stronger National Government

Advocacy for or the development of increased powers and responsibilities at the national level, often to improve governance, address national issues, and strengthen national unity.

Foreign Imports

Goods or services that are brought into a country from abroad for sale, which can impact local economies, industries, and trade balances.

Constitutional Convention

A meeting held in 1787 where delegates from the thirteen American colonies agreed upon the United States Constitution.