A copper wire of radius 0.1mm and resistance `1k(Omega)`is connected across a power supply of 20 V.
Channel: Doubtnut
Date: 2020-07-12

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