Question

if two lamps are rated 100 w at 220 V and another 60 w at 220 V are connected in parallel to electric main supply what current is drawn from the line if the supply voltage is 220 V​

Answer 1

Total power = (100+60)= 160 W

Voltage = 220 V

N0w, p = v × I

160 = 220 × I

I = 160 / 220

I = 0. 72 A

This current will flow through the sum of parallal combination of the resistances.

Assume this current will flow through a immazing middle line which is parallal both of the resistances

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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