Question

When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
a. increases
b. decreases
c. remains the same
d. doubles?

Answer 1

I think it decreases.

Answer 2

Answer:

The correct answer will be -

(b) Decreases

Step-by-step explanation:

When the current through an Inductor decreases, the amount of energy stored in the electromagnetic field also decreases.

Because

The relation between stored energy in an Inductor is given by -

$E = \frac{1}{2} LI^2$

In other words -

$E \propto I^2$

So, Energy stored in an Electromagnetic field is directly proportional to the Square of current through the Inductor.

If we Decrease the current the energy stored in the Inductor also decreases.

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