Question

Two identical conductors maintained at different temperatures are given potential differences in the ratio 1 : 2. Then the ratio of their drift velocities is

• A. 1:02
• B. 3:02
• C. 1:01
• D. 1 : $2^{1/2}$

Answer 1

Answer: (A)

1:02

Answer 2

\hspace40mm i = neAdv_d
\hspace40mm \frac{V}{R} = neAv_d
\hspace40mm V = v_d
\hspace40mm \frac{V_1}{V_2} = \frac{V_{d_1}}{V_{d_2}} = \frac{1}{2}
\hspace40mm \frac{V_{d_1}}{V_{d_2}} = \frac{1}{2}