Question

Magnetic flux of $10\mu Wb$ is linked with a coil, when a
current of 2 mA flows through it. What is the self
inductance of the coil?

• A. 10 mH
• B. 5 mH
• C. 15 mH
• D. 20 mH

Answer 1

Answer: (B)

Magnetic flux $\varphi =Li$
$L=\frac{\varphi }{i}=\frac{10\times 10^{-6}}{2\times 10^{-3}}=5\times 10^{-3}=5mH$