CBSE BOARD X, asked by sudhishsaxena, 1 year ago

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?

Answers

Answered by Harsh2512
28
hey dear ...here is ur ans..

Both 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

hope it helps u...if u liked the ans then pls mark it as brainliest....☺☺☺


tripathinipun82: i did this question similraly
Harsh2512: ok
Answered by Anonymous
14

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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