Question

define 1 volt 21 V potential difference ​

Answer 1

Potential difference between two points is said to be 1 volt if work done in transferring 1 coulomb of charge is 1 joule.

Answer 2

Answer:

Definitions of volt —

Potential difference across a resistance of 1 Ohm when current of 1 Amp passes through it.

Potential difference betwe two parallel infinite conducting plates 1 meter apart, that create a field of 1 newton per coulomb.

Potential difference between two points on a a conductor that impart energy of 1 Joule per Coulomb of charge that passes through it every second.

Potential difference that produces 1 watt of power when a current of 1 Amp passes through it.