A copper wire of radius 0.1 mm and resistance `1 k Omega` is connected across a
Channel: Doubtnut
Date: 08/11/2021

A copper wire of radius 0.1 mm and resistance `1 k Omega` is connected across a power supply of 20 V. (i) How many electrons are transferred per second between the supply and the wire at one end ? (ii) Write down the current density in the wire.