Question

two electric bulbs rated 100W :220V and 60W:220V are connected in parallel to an electric mains of 220 V .Find the current drawn from the mains.

Answer 1

hey hope it will help you
v=220v
p=100w
p=60w
I=?
p=vi
100=220i
I=2.2

Answer 2

Answer:

Explanation:

P = VI

Where :

P = power measured in watts.

V = Potential difference measured in volts.

I = Current measured in Amperes.

We can get the currents for the two bulbs.

60W : 220 V

I = P/V = 60/220 = 0.2727 A

100W : 220 V

I = P/V = 100/220 = 0.4545 A

The total current drawn will be :

= 0.2727 + 0.4545 = 0.7272 A

This is the current that will be drawn by the bulbs from the mains.