Question

a lamp rated 100 w and 220 V is connected to the main Electric Supply what current is drawn from the supply line​

Answer 1

Answer:

When a lamp rated 100 W at 220 V is connected to the main electric supply 0.455 ampere current and 483.5 ohms resistance must be there.  

Given:

P  =  100 W

V  =  220 V

Solution:

Since

P = V × I    

Plug the values in the given formula:

100 W = 220 V × I

I  =  0.455 amp

Answer 2

Answer:

Explanation:

P=VI=0.45 Ampere