OCR GCSE PHYSICS A Electric circuits

This section of the website contains suggestions for material that could be used with the OCR 21st century Science GCSE Physics Specification.
OCR is not affiliated with the author of the site and has had no involvement with the content of this website.

I am grateful to OCR for permission to reproduce adapted versions of text from their 21st century Science Specification on this site. For the full version of the specification please see: OCR Physics A J635

P5.1 Electric current and electric charge

Charging by friction
Static electricity (11-14)

Forces between charges
Stat ic electricity (11-14)

Electric current as a flow of charge

Charge and current (11-14)

Measurement of electric current
Charge and current (11-14)

Motion of free electrons in a continuous loop

Charge and current (11-14)

Conductors and insulators
Charge and current (11-14)
Semicondutcors (16- 19)

14-16/Electricity and magnetism/Current electricity/Problems/Electric circuits 1
14- 16/Electricity and magnetism/Current electricity/Problems/Current electricity

P5.2 The size of the current in an electric circuit

Voltage and current
Resistance (14-16)

Resistance
Resistance (14-16)

Resistance and heating
Resistance (14- 16)

The Light dependent resistor and thermistor
LDR and thermistor (14-16)

14-16/Electricity and magnetism/Current electricity/Experiments/Thermistor resistance

Electrical symbols
Electrical symbols (11-14)

Resistors connected in series or parallel
Ohms Law (14-16)

Series and parallel components (14-16)

Resistance equation
Ohms Law (14-16)

14-16/Electricity and magnetism/Current electricity/Experiments/Ohm's law

Graphs of the variation of current with voltage
Ohms Law (14-16)

14-16/Electricity and magnetism/Current electricity/Problems/Current electricity
14- 16/Electricity and magnetism/Current electricity/Problems/Ohm's law and resistance
14-16/Electricity and magnetism/Current electricity/Problems/Voltage current and resistance
14-16/Electricity and magnetism/Current electricity/Problems/Electric circuits 2

P5.3 How do parallel and series circuits work?

Connection of a voltmeter
Ammeter and voltmeter connection (14-16)
Teachers/OHTs/Ammeter and voltmeter

Voltage and energy
Volts amps and joules (14-16)
Electrical energy and voltage (14-16)

Batteries (cells) in series or parallel
Series and parallel components (14-16)

Series and parallel circuits
Series and parallel components (14-16)
Series circuits (14-16)
Series and parallel (14-16)

14-16/Electricity and magnetism/Current electricity/Text/Problems/Electric circuits 3

P5.4 Mains electricity and induced voltages and currents

Mains electricity and generators
Generat ors (14-16)

Generators and electromagnetic induction
Electromagnetic induction (14-16)

Electromagnetic induction and current flow
Electromagnetic induction (14-16)

Induced voltages due to relative motion of a magnet and a coil of wire
Electromagnetic induction (14-16)


Induced voltages due to changing magnetic fields in coils
Electromagnetic induction (14-16)

14-16/Electricity and magnetism/Electromagnetic induction/Problems/Electromagnetic induction 1
14-16/Electricity and magnetism/Electromagnetic induction/Problems/Electromagnetic induction 2
14-16/Electricity and magnetism/Electromagnetic induction/Experiments/Electromagnetic induction
14-16/Electricity and magnetism/Electromagnetic induction/Experiments/Generators

Construction of a transformer
Transformer (14-16)
Teachers/OHTs/Transformer

Input and output voltage of a transformer
Transformer (14-16)

14-16/Electricity and magnetism/Electromagnetic induction/Problems/Transformers
14-16/Electricity and magnetism/Electromagnetic induction/Problems/Transformer problems

Generators and electromagnetic induction
Generators (14-16)

Current from a battery is always in one direction (d.c) and mains is alternating (a.c)
Direct and alternating current (14-16)
Fuses plugs ands switches (11-14)

Distribution of electricity as a.c
Transmission of electricity (14-16)
Fuses plugs ands switches (11-14)
Teachers/OHTs/Transmission of electricity

14-16/Electricity and magnetism/Electromagnetic induction/Problems/Electric circuits 4

P5.5 Using electrical energy at home

Electric charge and energy
Volts amps and joules (14-16)
Electrical energy and voltage (14-16)

Power and watts
Electrical Power (14-16)

14-16/Electricity and magnetism/Current electricity/Experiments/Power of a lamp and a small motor
14-16/Electricity and magnetism/Current electricity/Problems/Electrical power

Joules and kilowatt hours
Paying for electricity (14-16)

Paying for electrical energy
Paying for electricity (14-16)



14-16/Electricity and magnetism/Current electricity/Problems/Voltage current resistance power grid
14-16/Electricity and magnetism/Current electricity/Problems/Electrical power
14-16/Electricity and magnetism/Current electricity/Problems/Electric circuits 5