Q.

A lamp in a circuit consisting of a coil of large number of turns and a battery doesnot light upto full brilliance instantly on switching the circuit. Why?  

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a

electricity resistance

b

no current

c

induced emf

d

induced current

answer is B.

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Detailed Solution

Because of self induction.

Self induction is the property of a coil by virtue of which the coil opposes any change in the strength of current flowing through it by inducing an e. m. f. in itself

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