Question

two lamps one rated 100 W: 220 V and the other 60W: 220 V are connected in parallel to electric mains supply. find the current drawn by 2 bulbs from the line if the supply voltage is 220 V.

Answer 1

By using P= V.I
P1 = V x I1
100=220 x I1
I1 = 10/22
P2 = V x I2
60= 220 x I2
I2 = 6/22
I = I1 + I2
I = 16/22
I = 0.7273
I = 0.73 A (approx)
Hence the total current is 0.73 A
Hope this will help you...
Rahul

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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