Skip to content

Course home

Sign up

1.2 Conservation and dissipation of energy

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536
Question 34

An electric drill transfers energy usefully to the kinetic store of the rotating drill bit. Some energy is dissipated to less useful stores.

PowerValue
Total input power720 W
Power dissipated180 W

Calculate the efficiency of the electric drill as a decimal.

[2]
Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank