Efficiency & Thermal Efficiency

Question 1

What is thermal equilibrium?

Answer 1

Thermal equilibrium occurs when two or more objects in contact reach the same temperature and there is no net flow of heat between them.

Question 2

What is efficiency?

Answer 2

Efficiency is the percentage of the total energy supplied that is converted into useful energy.

Question 3

What is the formula for efficiency?

Answer 3

Efficiency(%)

Usefulenergy
—————————–
Totalenergyinput
×
100