Question 17. Solve the example. Two tungsten bulbs of wattage 100 W and 60 W power work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?

Question 17.

Solve the example.

Two tungsten bulbs of wattage 100 W and 60 W power work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?

Answer:

We know P = VI

Where P = power

V = potential difference

I = current

Here V = 220 V

P = 100 W + 60 W = 160 W

[ Since bulbs are connected in parallel ]

I =?

I = P/V

= 160W/220V

I = 0.72 A