Question

An electric heater is used on 220 V supply and draws a current of 5 A. What is its electric power?

Answer 1

Answer:

power = iv

p = 5×220

p = 1100watt

Answer 2

The electric power is 100 watt.

Given:

Voltage = 20 V

Current = 5 A

Formula:

Electric power = Current × Voltage

Solution:

Electric power = 20 × 5

Therefore, electric power = 100 watt

The electric power defines the rate in which the electric energy is transferred to electric circuit. The unit of electric power is Watt (SI unit).

1 Watt = 1 Joule per Second