When current I flows through a wire, drift velocity of the electrons is v. When a current 21 flows through another wire of the same material having double the length and area of cross-section, the drift velocity of the electron will be:
A. 2 v
B. \(\frac{v}{2}\)
C. v
D. \(\frac{v}{4}\)
Answer:C
When current I flows through a wire, drift velocity of the electrons is v. When a current 21 flows through another wire of the same material having double the length and area of cross-section, the drift velocity of the electron will be:
A. 2 v B. \(\frac{v}{2}\) C. v D. \(\frac{v}{4}\)