Question

Two lamps, one rated 100 W; 220 V, and the other 60 W; 220 V, are connected

in parallel to electric mains supply. Find the current drawn by two bulbs from

the line, if the supply voltage is 220 V.​

Answer 1

current drawn by the first lamp:

P = V*I

100 = 220 * I

I = 100/220

= 0.45 A

current drawn by the second lamp:

P = V *I

60 = 220* I

I = 60/220

= 0.27 A

Answer 2

Hello friend___❤

Here is your answer ✒

For the 1st lamp:

Power P1 = 100 W and

Potential difference V = 220 V

Therefore,

I1= P1/ V = 100/220 = 0.455 A

For the 2nd lamp:

Power P2 = 60 W and

Potential difference V = 220 V

Therefore,

I2= P2/ V =60/ 220 = 0.273 A

So, the net current drawn from the supply is given by

= I1 + I2 = 0.455 + 0.273 = 0.728

I hope, this will help you___❤❤

Thank you

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