Question

How much current will a device of power 100 W draw from a source of 220 V

Answer 1

P=100 W and V=220 V

We know that VI=P

So, I=P/V

=100/220=10/22

=0.45 A

Answer 2

Given that,

Power of a device, P = 100 W

Voltage, V = 220 V

To find,

Current.

Solution,

Power of an device is given by :

$P=VI$

I is current flowing in the circuit

$I=\dfrac{P}{V}\\\\I=\dfrac{100}{220}\\\\I=0.45\ A$

So, the current flowing in the circuit is 0.45 A.

Learn more,

Power

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