Question

2A current flows through an electrical device of resistance 120 ohm. Calculate power of the device

Answer 1

Answer :

Current flow = 2A

Resistance of device = 120Ω

We have to find power dissipated by device$.$

Formula of power dissipated by electric device in termas 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

Answer 2

Answer:

Power of device is $480W$

Explanation:

It is given that

Current flowing is $2A$

Resistance $=120ohm$

We need to determine power dissipated by device.

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

$P=I^{2} R$

Putting values

$P=2^{2} 120$

$P=4*120$

$P=480W$

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