Questions in emi

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	When the number of turns and the length of the solenoid are doubled keeping the area of cross-section same, the inductance
	A 100 mH coil carries a current of 1 ampere. Energy stored in its magnetic field is
	The mutual inductance of an induction coil is $5H$. In the primary coil, the current reduces from $5A$ to zero in ${10^{ - 3}}s$. What is the induced emf in the secondary coil
	The self inductance of a straight conductor is
	What is the coefficient of mutual inductance when the magnetic flux changes by $2 \times {10^{ - 2}}Wb$ and change in current is 0.01A
	The current in a coil changes from 4 ampere to zero in 0.1 s. If the average e.m.f. induced is 100 volt, what is the self inductance of the coil
	Pure inductance of 3.0 H is connected as shown below. The equivalent inductance of the circuit is
	A varying current at the rate of 3 A/s in a coil generates an e.m.f. of 8 mV in a nearby coil. The mutual inductance of the two coils is
	If a current of 10 A flows in one second through a coil, and the induced e.m.f. is 10 V, then the self-inductance of the coil is
	The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is