Question

A currentdlows through an electrical device of resistance 120 ohm a) Calculate power of the device

Answer 1

Current flow = 2A

Resistance of device = 120Ω

We have to find power dissipated by device

Formula of power dissipated by electric device in term as 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

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