Question

A kettle transfers 6000 J of energy electrically. 1500 J of this is wasted. What is the efficiency of this kettle in percentage?

Answer 1

Answer:

Explanation:

Here q1 is 6000j and q2 is 1500j

Efficiency is given by

η=1-

η=1-(1500/6000)

η=1-(0.25)

η=0.75