Home
Class 12
PHYSICS
When current in a coil changes from 5 A ...

When current in a coil changes from 5 A to 2 A in 0.1 s, average voltage of 50 V is produced. The self - inductance of the coil is :

A

`1.67H`

B

`6H`

C

`3H`

D

`0.67H`

Text Solution

Verified by Experts

The correct Answer is:
A
`EMF=(Ldi)/(dt)`
`50=L(5-2)/(0.1 "sec")`
`implies L=(50xx0.1)/3=5/3=1.67H`
Promotional Banner

Similar Questions

Explore conceptually related problems

In a coil current falls from 5 A to 0 A in 0.2 s. If an average emf of 150 V is induced, then the self inductance of the coil is

When current flowing in a coil changes from 3A to 2A in one millisecond, 5 volt emf is induced in it. The self-inductance of the coil will be-

The current in a coil changes from 0 to 2 A in 0.05 sec. If the induced e.m.f is 80 V, the self inductance of the coil is

A varying current in a coil change from 10A to 0A in 0.5 sec . If the average emf induced in the coil is 220V , the self inductance of the coil is

When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 volt is induced in the coil. The coefficient of self induction of the coil is -

When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 volt is induced in the coil. The coefficient of self induction of the coil is -

When the current in a coil changes from 8A to 2A in 3xx10^(-2)s , th eemf induced in the coil is 2V . The self-induced of coil in mH

A varying current ina coils chagre from 10 A to zero in 0.5 s .If the average emf induced in the coils is 220 V , the self- inductance of the coils is