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An
air-cored solenoid with length 30 cm, area of cross-section 25 cm2
and number of turns 500, carries a current of 2.5 A. The current is
suddenly switched off in a brief time of 10−3
s. How much is the average back emf induced across the ends of the
open switch in the circuit? Ignore the variation in magnetic field
near the ends of the solenoid.
Posted on 13 Dec 2024, this text provides information on Physics related to Standard XII. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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25 Qs 25 Marks 15 Mins
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