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ct_magflux

# ct_magflux - the solenoid’s magnetic field increases A B...

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Lenz’s Law 1 A long, straight wire carries a steady current I . A rectangular conducting loop lies in the same plane as the wire as shown. Suppose the loop is pushed toward the wire. In what direction will the induced current flow in the loop? A. Clockwise. B. Counterclockwise. C. There is no induced current. D. Need more information.

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Bulbs around solenoid A solenoid produces a magnetic field (pointing out of the page) whose strength is increasing (left figure). This induces an emf in the wire surrounding the solenoid, which causes the bulbs A and B to light up. In the figure on the right, a short has been inserted between points P and Q. Compared to before, what happens as
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Unformatted text preview: the solenoid’s magnetic field increases? A B Q P A. Bulb A doesn’t light; bulb B gets brighter. B. Bulb B doesn’t light; bulb A gets brighter. C. Bulb A doesn’t light; bulb B gets dimmer. D. Bulb B doesn’t light; bulb A gets dimmer. E. Both bulbs are unlit. F. None of the above. Transformer A battery is connected to a transformer, as shown. When the switch is closed, the potential difference across R becomes A. E N 2 1 . B. C. D. +-N > N secondary primary...
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ct_magflux - the solenoid’s magnetic field increases A B...

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