Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Induction

Question:

In a solenoid, if number of turns per unit length is doubled, then self inductance will become:

Options:

half of its initial value 

double of its initial value 

\(\frac{1}{4}\) times of its initial value 

4 times of its initial value

Correct Answer:

4 times of its initial value

Explanation:

$\text{Self Inductance L} \propto n^2$

$ \Rightarrow \text{If n is doubled then L will become 4 times}$