Question

A wire is connected to a battery and drift velocity of electrons in the conductor is vo.If wire is stretched to quadruple its length and connected to same battery, the new drift velovity is

Answer 1

Answer ⇒ If length is increased four times(quadruple), then drift velocity becomes 1/4.

Explanation ⇒

Using the formula,

Drift velocity, v = eVτ/ml

Now, When the same battery is there, this means, V is cosnatnt.

We know, that mass (m), Average Relaxation time(τ), e (Charge on electrons) is cosnatnt.

Thus, Drift velocity is inversely proportional to the length of the conductor.

If length is increased four times(quadruple), then drift velocity becomes 1/4.

Hope it helps.

Answer 2

Answer:

 If length is increased four times(quadruple), then drift velocity becomes 1/4.