What is the self-inductance of a coil in which an induced emf of $2 \,V$ is set up, when the current is changing at the rate of $4 \,A s^{-1}$?
- A$0.5 \,mH$
- B$0.05 \,H$
- C$2 \,H$
- D$0.5 \,H$
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View SolutionThe self-inductance of a solenoid is:
The self-inductance of an air-cored solenoid of length $40 \ cm$,diameter $7 \ cm$ having $200$ turns is nearly: (in $\mu H$)
In an induction coil with resistance,the induced emf will be maximum when
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