Home
Class 12
PHYSICS
In an inductor of inductance L=100mH, a ...

In an inductor of inductance `L=100mH`, a current of `I=10A` is flowing. The energy stored in the inductor is

A

`5J`

B

`10J`

C

`100J`

D

`1000J`

Text Solution

Verified by Experts

The correct Answer is:
A

`U+(1)/(2)Li^(2)=(1)/(2)xx100xx10^(-3)xx(10)^(2)=5J`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Problems On Mixed Concepts|37 Videos
  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Section B - Assertion Reasoning|31 Videos
  • ELECTROMAGNETIC INDUCTION

    A2Z|Exercise Inductor Circuits|31 Videos
  • ELECTRIC POTENTIAL & CAPACITANCE

    A2Z|Exercise Section D - Chapter End Test|29 Videos
  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Energy Stored In An Inductor

When current i passes through an inductor of self inductance L, energy stored in it is 1//2. Li^(2) . This is stored in the

Knowledge Check

  • A current of 1 A through a coil of inductance of 200 mH is increasing at a rate of 0.5As^(-1) . The energy stored in the inductor per second is

    A
    `0.5Js^(-1)`
    B
    `5.0Js^(-1)`
    C
    `0.1Js^(-1)`
    D
    `2.0Js^(-1)`
  • A capacitor having capacitance 2 mu F is charged to a potential difference of 50 V. it is then diconnected from battery and connected to an inductor of inductance 5 mH. Peak current that flows through the inductor is

    A
    1A
    B
    2A
    C
    3A
    D
    4A
  • A circuit contains an inductor of value 2H as shown at t= 0 no current was flowing through battery. Find the energy stored in inductor at t=4 sec.

    A
    `144 J`
    B
    `150 J`
    C
    `160 J`
    D
    `180 J`
  • Similar Questions

    Explore conceptually related problems

    In an inductor of self-inductance L=2 mH, current changes with time according to relation i=t^(2)e^(-t) . At what time emf is zero ?

    An inductor of inductance L and resistance R has energy stored E in it in the discharging LR circuit the time after which energy stored will be 25% of initial energy is

    If n inductor of inductance L, radius r, current charges from 1_(0) to I_(2). Find work done.

    Obtain the expression for the magnetic energy stored in an ideal inductor of self inductance L when a current I passes through it. Hence obtain the expression for the energy density of magentic field produced in the inductor.

    (a) The current through two inductors, of self-inductance 12 mH and 30 mH respectively, is increasing with time at the same rate. Draw graphs showing the variation of the (i) emf induced with the rate of change of current in each inductance, (ii) energy stored in each inductor with the current flowing through it. (b) Compare the energy stored in the coils if the power dissipated in the coils is the same.