Physics, asked by angelarnareddy, 7 months ago

In a wire of circular cross-section with radius r free electrons travel with a drift velocity v, when a current I flows through the wire. The current in wire of half the radius and of the same material when the drift velocity is 2v

Answers

Answered by Bhuveneshkumar14914
3

Answer:

222²22222222222222222332558555

Answered by spidey2475
2

Answer:

current become half

Explanation:

I=nAeV

V=drift velocity

A=area of cross section

A'= π(r/2)^2=πr^2/4

A'=A/4

V'=2V

I'= nA'eV'

I'= n(A/4)e(2V)

I'=1/2nAeV

I'=1/2I

so current become half

Similar questions