a current flows in a wire of cross section with the free electrons travelling with velocity V if an equal current flows in a wire of twice the radius new Drift velocity is
Answers
Answered by
10
it's 1/4th of the first case velocity
current i is proportional to A*V where A is area and v is velocity.
since current is constant
A*V is also constant and since radius is doubled area becomes 4 times
Similar questions