Question

How much current does an electric heater draw from a 220 V line, if the resistance of the
heater [when hot] is 50 ohm?

Answer 1

• voltage=v=220 V
• reistance=R=50ohm

We know

${\boxed{\sf V = IR}}$

$\sf\longmapsto 220 = I \times50$

$\sf\longmapsto \dfrac{220}{50} = I$

$\sf\longmapsto 4.4 = I$

Current is 4.4 A