A potential difference of 30 V is applied between the ends of a conductor of length 100 m and resistance 0.5 Ω and uniform area of cross-section. The total linear momentum of free electrons is -
(A) 3.4 × 10–6 kg*s
(B) 4.3 × 10–6 kg*s
(C) 3.4 × 10–8 kg*s
(D) 4.3 × 10–8 kg*s
Correct option (C) 3.4 × 10–8 kg/s
Explanation:
Total no. of free e– , N = nAl and linear momentum of each e-, P = mvα
∴ Total momentum of all free e¯s,
