Question

A tube light draws 0.1A current from 220V supply.
what current will this tube light draw when it is connected to a 110V supply?

Answer 1

As Ampere and Volts are directly proportional,
A₁/A₂ = V₁/V₂
0.1/A₂ = 220/110
0.1/A₂ = 2
A₂ = 0.1/2 = 0.05 A

Answer 2

Answer:

0.05 A

Explanation:

V = IR

R = V/I

= 220/0.1 = 2200

R = 2200

I = V/R

= 110/2200

= 0.05 A