Parallel circuits
Physics · Grade 10 · about 40 minutes
Several paths, one voltage: currents add, reciprocals of resistance add, and one branch can fail without killing the others.
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- 9 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
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- Current, voltage and resistance
- Ohm's law, resistivity and resistor codes
- Resistor networks, power and heating
- Circuit symbols and drawing circuits
- Measuring current with an ammeter
- Measuring potential difference
- Verifying Ohm's law
- Factors affecting the resistance of a wire
- Measuring the resistivity of a wire
- Determining e.m.f. and internal resistance
- Laws of current and voltage in a circuit
- Series circuits
- Parallel circuits
- Mixed networks and voltage dividers
- Electrical energy and the kilowatt-hour
- Heating effect of an electric current
- Fuses, ratings and choosing cable
- Kenya domestic wiring and electrical safety