Question

The identical conductors maintained at same temperature are given potential difference in the ratio 1 : 2. Then the ratio of their drift velocities is ______.

Options

• 1 : 2

• 3 : 2

• 1 : 1

• 1 : 4

Answer 1

The identical conductors maintained at same temperature are given potential difference in the ratio 1 : 2. Then the ratio of their drift velocities is 1 : 2.

Explanation:

Drift velocity

or `"V"_"d" = "eE"/"m" tau = ("e"tau"V")/"mL"   [because "E" = "V"/"L"]`

`"V"_"d" prop "V" therefore ("V"_("d"_1))/("V"_("d"_2)) = "V"_1/"V"_2`

`"V"_("d"_1)/"V"_("d"_2) = 1/2`