Home
Class 12
PHYSICS
An inductor of 5 H inductance carries a ...

An inductor of 5 H inductance carries a steady current of 2 A. How can a 50 V self induced e.m.f. be made to appear in the inductor ?

Text Solution

Verified by Experts

L=5H ,|e| =50 V , Let us produce the required emf by reducing current to zero
Now `|e| =L (dI)/(dt) or dt =(LdI)/(|e|)=(5xx2)/(50)s`
`(10)/(50)s=1/8s=0.2`s
So , the desired emf can be produced by reducing the given current to zero in 0.2 second.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EVALUATE YOURSELF -1|4 Videos

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EVALUATE YOURSELF -2|6 Videos

  • ELECTRO MAGNETIC WAVES

    NARAYNA|Exercise LEVEL-II(H.W)|14 Videos

  • ELECTROMAGNETIC WAVES

    NARAYNA|Exercise EXERCISE -4|15 Videos

Similar Questions

Explore conceptually related problems

A 10 H inductor carries a steady current of 2 A. how can a self - induced emf of 100 V be made to appear in the inductor ?

A 12 H inductor carries a current of 2.0 A. At what rate must the current be changed to produce a 60 V emf in the inductor?

A coil of self inductance 3 H carries a steady current of 2 A. What is the energy stored in the magnetic field of the coil?

Energy stored in a coil of self inductance 40 mH carrying a steady current of 2 A is

The current in a coil of inductance 5H decreases at the rate of 2A//a . The induced e.m.f. is

An inductor coil carries a steady state current of 2.0 A when connected across an ideal battery of emf 4.0 V. if its inductance is 1.0 H, find the time constant of the circuit.

A coil of self inductance 2H carries a 2A current If direction of current is reversed in 1 sec., then induced emf in it :-

A coil of self inductance 4H carries a 10 A current. If direction of current is reversed in 2 sec, then induced emf in it

An inductor of inductance L Henry is connected to an AC supply of 12 V . The frequency of source is 50 Hz and current in the inductor is 0.5 A. When the same inductor is connected across a direct current supply of 12 V it draws the current of 1.5 A . Find the value of L .