Question

If a change in current of 0.01 A in one coil produces a change in magnetic flux of $2\times {10}^{-2}$ Wb in the other coil, then the mutual inductance (in henry) of the two coils is

• A. zero
• B. 0.5
• C. 2
• D. 3

Answer 1

The correct option is C

2

$M=\frac{\Delta \varphi }{\Delta t}=\frac{2\times {10}^{-2}}{0.01}=2$ henry.