Question

Name the unit used in selling electrical energy to consumers. two lamps, one rated 100 w at 220 v and the other 40 w at 220 v are connected in parallel to a 220 v mains supply. calculate the electric current drawn from the supply line

Answer 1

Unit used to sell electrical energy is 'Kwh' or unit . 1Kwh= 1unit.
$p = vi \\ i = \frac{p}{v}$
I is different in both the bulbs because the bulbs are in parallel.
therefore
I1 = 100/220
I1=0.85
I2=40/220
I2=0.18
therefore
total current = 1.03A

Answer 2

Answer:

Here's ur answer ↑

The total current draw from the supply line will be 0.63 A.

Hope it helps.