Questions
when the current change from 2 A in 0.05 s, an e.m.f. of 8 V is induced in a coil. The coefficient of self-induction of the coil is
detailed solution
Correct option is A
|e|=Ldidt⇒8=L×(2−(−2))0.05⇒L=0.1HTalk to our academic expert!
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A coil is wound as a transformer of rectangular cross-section. If all the linear dimensions of the transformer are increased by a factor 2 and the number of turns per unit length of the coil remain the same, the self inductance increased by a factor of
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