A current of 10A is reduced to zero at a uniform rate in `10^(-3)s`. If co-efficient of mutual induction is 3H. What is the induced emf in the secondary?

The rate constant of a reaction is 3xx10^2 min^-1 . What is the order of the reaction?

The rate of a reaction is 1.2xx10^-3 L mol^-1 s^-1 . What is the order of the reaction?

If the rate of change of current 2A second induces an emf of 40 mV in the solenoid, what is the self-inductance of this solenoid?

Find the mutual inductance between the two coils if a current of 10 ampere in primary coil changes the flux by 500 Wb per turn in the secondary coil of 200 turns. Also, find the induced e.m.f. acorss the ends of the secondary coil if this change occurs in 0.5 sec.