A bar magnet is held near a coil of wire. The coil is connected to a sensitive voltmeter.
The N-pole of the magnet is moved quickly towards the coil. The voltmeter shows a reading of +10 mV.
The N-pole of the magnet is then moved slowly away from the same end of the coil. The reading on the voltmeter is observed.
Which voltmeter reading is possible?
1 )
–15 mV
–5 mV
3 )
0 mV
4 )
+5 mV
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