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Electricity and Magnetism

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

What do current, voltage and resistance mean, and how are they linked?

Describe current, voltage and resistance, state their units, and use the relationship voltage equals current times resistance
A clear answer to the N(T) Science point on current, voltage and resistance. What each one means, its unit and measuring instrument, and how to use voltage equals current times resistance.
8 min answer →

How does electricity in the home keep us safe, and what dangers should we avoid?

Describe the electrical safety features in the home, including fuses, earthing and insulation, and explain safe practices to avoid electric shock
A practical answer to the N(T) Science point on electrical safety. How fuses, earthing and insulation protect us, the dangers of mains electricity, and safe habits to avoid electric shock.
8 min answer →

How do magnets behave, and how can electricity make a magnet?

Describe the properties of magnets and magnetic materials, the behaviour of poles, and how an electromagnet is made and used
A practical answer to the N(T) Science point on magnets. Magnetic materials, how poles attract and repel, how an electromagnet is made with a coil and current, and how to make it stronger.
8 min answer →

What do you need to make a simple circuit work, and how do series and parallel circuits differ?

Describe the parts of a simple electric circuit, use circuit symbols, and compare series and parallel circuits
A simple answer to the N(T) Science point on electric circuits. The parts of a circuit, common circuit symbols, and the difference between series and parallel circuits with everyday examples.
8 min answer →