Question

2A current glows through a elctric device of resistance 120. Calculate its power?​

Answer 1

Answer:

480 watt

Explanation:

Current flow = 2A

Resistance of device = 120Ω

We have to find power dissipated by device

Formula of power dissipated by electric device in terms of resistance and current is given by

•    P = I² × R

P denotes power, I denotes current and R denotes resistance.

Let's calculate :

⇒ P = I² × R

⇒ P = (2)² × 120

⇒ P = 4 × 120

⇒ P = 480 watt