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3.5.1 Current Electricity
Current and Charge
3
Charged particle movement
Circuit Symbols
1
Essential for circuit diagrams
Resistance
4
Voltage to current ratio
Resistivity
1
A bulk material property
Electrical Power
2
Rate of energy transfer
Circuits
4
How components behave together
Internal Resistance
1
From EMF sources
Conductors
1
These allow the movement of charges
Voltage
4
Potential difference or EMF
IV Characteristics
1
Common component behaviour
LDR's and Thermistors
2
Semiconductors with variable resistance
Kilowatt Hours
1
A large unit of energy
Potential Dividers
1
Dividing potential difference
The Wheatstone Bridge
1
A simple bridging circuit
Practical Experiments
Practical - Resistivity
1
Measuring resitivity if a metal
Practical - Internal Resistance
1
Measuring the EMF and resistance of a cell
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