Question

What is the commercial unit of electric energy?
Convert it into joules.

Answer 1

Answer:

commercial unit of electricity is watt

Answer 2

Answer:

$killowatt \: hour$

$1kwh = 36 \times 10 {}^{6}$

Explanation:

commercial unit if electrical energy is

$killowatt \: hour$

conversion of killowatt hour into joules

$1killowatt \: hour = 1000watt \: \times 60 \times 60second$

$= 1000watt \times 3600second$

$= 36 \times 10 {}^{6} joules$

• killowatt hour is used to express large quantity of energy because joule is too small to express large amount of energy.