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Physics (Energy (Food and fuels, Energy adds up, Energy and temperature,…
Physics
Energy
Food and fuels
Energy adds up
Energy and temperature
Energy transfer: particles
Energy transfer: radiation
Energy resources
Energy and Power
work, energy, and machines
Electricity
Circuits and Current
current is the amount of charge flowing per second
a cell or battery pushes a charge around a circuit
Charging up
positive repels positive
negative repels negative
positive attracts negative
an electric field is always round a magnet
Potential Difference
measured in volts
measured using a voltmeter
voltage is the amount of 'push' in the circuit
Series and Parallel
series
one loop
parallel
more than one loop
Resistance
Measured in Ohms
the amount of force pushing the charge back
Magnetism
Magnets and Magnetic fields
north pole
repels north pole
south pole
repels south pole
Electromagnets
Using electromagnets