Question

An electric heater of resistance 230volt is connected to 230v supply. Calculate the heat energy produced by it in 2 seconds?

Answer 1

Explanation:

Ohm's law :

• V = IR

or, I = V/R

→ I = 230/230

→ I = 1

Current is 1 A .

Now,

Heat energy = VIt

→ Heat energy = 230 × 1 × 2

→ Heat energy = 460 .

Heat energy produced in 2 seconds is 460 J.