First slide

Inductance

Question

A long solenoid has 1000 turns . When a current of 4 A flows through it, the magnetic flux linked with each turn of the solenoid is 4 x 10^-3 Wb .The self inductance of the solenoid is :

Easy

A

4 H
B

3 H
C

2 H
D

1 H

Solution

Flux linked with each tum = 4 x 10^-3 Wb
$∴$ Total flux linked = 1000 [4 x 10^-3] Wb= 4 Wb
$ϕ_{total} = Li = 4 \Rightarrow L = 1 H$

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