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

oth the bulbs are connected in parallel. Therefore, potential difference across each of them will be same that is 220 V, Current drawn by the bulb of rating 100 W is given by

I=P/V

 =100/220=0.4545…A

Similarly, current drawn by the bulb of rating 60 W is given by

I=P/V

 =60/220=0.2727…A

∴ the total current drawn from the line =0.4545+0.2727=0.727A

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

✿┅═══❁✿ Be Brainly✿❁═══┅✿