Question

There will be no induced voltage in an inductor if: a) the current is sinusoidal, b) the current is constant, c) the average of current is zero, d) the average of the current is negative.

Answer 1

The correct option is b

Step-by-step explanation:

Generally the induced voltage in an inductor is mathematically represented as

`V = L * (\Delta I )/(\Delta t)`

Now
`(\Delta I )/(\Delta t)` is the change in voltage with respect to time , when this is zero i.e when the current is not changing(what this means is when current is constant ) the induced voltage becomes

`V = L * 0`

=>
`V = 0 \ V`

Hence if the current is not changing with respect to time there will be no induced voltage