quiz5a - Name: ______________________ Class:...

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Unformatted text preview: Name: ______________________ Class: _________________ Date: _________ ID: A 1 quiz5 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. A flat coil of wire consisting of 20 turns, each with an area of 50 cm 2 , is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s. If the coil has a total resistance of 0.40 , what is the magnitude of the induced current? a. 70 mA b. 140 mA c. 500 mA d. 800 mA e. 900 mA ____ 2. A bar magnet is falling through a loop of wire with constant velocity. The north pole enters first. As the south pole leaves the loop of wire, the induced current (as viewed from above) will be: a. clockwise. b. counterclockwise. c. zero. d. along the length of the magnet. e. More information is needed. ____ 3. A 500-turn circular coil with an area of 0.050 0 m 2 is mounted on a rotating frame, which turns at a rate of 20.0 rad/s in the presence of a 0.050 0-T uniform magnetic field that is perpendicular to the rate of 20....
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quiz5a - Name: ______________________ Class:...

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