Electromagnetic...

When the coil and the magnet are both stationary

The instrument which works on the principle of mutual inductance is

For long distance transmission, the AC is stepped up because at high voltage, the transmission is

A machine is run such that electrical current is input and as a result rotation is achieved in the rotor. If current is turned off and rotation is forced in the machine

When current in a coil changes from $$+2 A$$ to $$-2 A$$ in $$0.05 s$$ and emf of $$8 V$$ is induced in the coil self-inductance of the coil is:

The magnetic flux linked with a coil at any instant $$t$$ is given by the equation $$\phi =5{ t }^{ 3 }-100t+300$$. The magnitude of emf induced in the coil after $$3 s$$ is

When a rod of length l is rotated with angular velocity of $$\omega$$ in a perpendicular field of induction B, about one end, the emf across its ends is

The magnetic flux linked with a coil satisfies the relation $$\phi = 4t^{2} + 6t + 9$$ Wb, where t is the time in second. The emf induced in the coil at $$t = 2s$$ is

The phenomenon of electromagnetic induction is :

What will be the self inductane of a coil of $$100$$ turns if a current of $$5\;A$$ produces a magnetic flux $$5\times10^{-5}$$ Wb?