The coil in an electromagnet has an inductance of 1.7 mH and carries a constant direct current of 5.6 A. A switch is suddenly opened, allowing the current to drops to zero over a small interval of time, At. If the magnitude of the e.m.f. induced during this time is 7.3 V, what is At ?
The coil in an electromagnet has an inductance of 1.7 mH and carries a constant direct current of 5.6 A. A switch is suddenly opened, allowing the current to drops to zero over a small interval of time, At. If the magnitude of the e.m.f. induced during this time is 7.3 V, what is At ?
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Transcribed Image Text:The coil in an electromagnet has an inductance of 1.7 mH and carries a constant direct current of 5.6 A. A
switch is suddenly opened, allowing the current to drops to zero over a small interval of time, At. If the
magnitude of the e.m.f. induced during this time is 7.3 V, what is At ?
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