A copper wire of diameter 2.00mm carries a current of 0.50A.The number of conducting electrons per metre cube of copper is 8.00 x 10^28.
a)Calculate the drift velocity of the conducting electrons.
b)What is the number of conducting electrons in 10.0cm length of the wire
The Attempt at a Solution
=3.9 x 10^-5 ms^-1
The answer that i get is wrong.i dunno why.I need help and explanation.Is it need to derivate the formula then calculate?Thank you.