Question

The property of self inductance of a coil/solenoid will oppose the flow of current as long as the current is

• A. constant
• B. increasing
• C. decreasing
• D. Both options $\left(B\right)$ and $\left(C\right)$

Answer 1

The correct option is D Both options $\left(B\right)$ and $\left(C\right)$

The self inductance of a coil/solenoid will oppose the flow of current as long as the current is changing $i.e.$ either increasing or decreasing.

The induced emf which opposes the change is,

$E=-L\frac{dI}{dt}$

If the current is constant, $\frac{dI}{dt}=0$, so, the induced emf will be zero.

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