Question

A electric toaster of resistance 20 Ohm takes a current of 5A. Calculate the heat developed in 30 s.

Answer 1

Answer:

Formula of calculating heat =

H = IVT

Explanation:

And, V= IR

Therefore, H= I^2RT

Which gives ,

H = 5×5×20×30

= 15000 Joules

= 15 kilojoules