Question

what is the unit of energy and power?

Answer 1

Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power from a current of 1 Ampere flowing through 1 Volt. 1 kilowatt-hour is the energy of one kilowatt power flowing for one hour. (E = P t).

Answer 2

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S.I Unit of Energy - Joule (J)
S.I Unit of Power - ergs per second (erg/s).....