Wire A and Wire B are each carrying the same current.If the diameter of Wire A is half that of Wire B,how does the drift velocity v_dA in Wire A compare to that in Wire B? A) v_dA = 4 v_dB B) v_dA = 2 v_dB C) v_dA = v_dB /2 D) v_dA = v_dB /4

Question

Quizplus · Accepted Answer

The drift velocity is inversely proportional to the cross-sectional area of the wire. Since the diameter of Wire A is half that of Wire B, its cross-sectional area is one-fourth. Therefore, the drift velocity in Wire A is four times that in Wire B.

Wire a and Wire B Are Each Carrying the Same