Question

A generator makes 3.45 kilojoules (kJ) of energy during each minute of

operation. Of this energy, 2.23 kJ are converted to thermal energy by
friction and electrical resistance. How many kilojoules are available as
electrical energy?

Answer 1

The total energy produced by the generator is 3.45 kJ. Of this energy, 2.23 kJ are lost because friction and electrical resistance, so this amount of energy is converted into thermal energy. This means that the rest of the energy is available as electric energy, and it is equal to:

`E=3.45 kJ-2.23 kJ=1.22 kJ`