Question

Magnetic flux of $4\text{Wb}$ crosses through a circular loop carrying current of $2\text{A}$. Find the self inductance of the loop, if the loop has $100$ turns.

• A. $100\text{H}$
• B. $200\text{H}$
• C. $400\text{H}$
• D. $600\text{H}$

Answer 1

The correct option is B $200\text{H}$

For an inductor,

$L=\frac{N\varphi }{I}$

$=\frac{100\times 4}{2}=200\text{H}$

Hence, option $\left(B\right)$ is the correct answer.