Have a go at these questions. Remember that the specification is the bottom line of what you need to know!

s a series circuit or parallel circuit better for domestic lighting? Explain your answer.

How does the current in a series circuit change when there is more applied voltage?

How does the current change in a series circuit when more components are added?

How does current change with voltage for a wire, filament lamp, diode and resistor?

How can current change with voltage be investigated experimentally?

What happens to the current in a circuit if the resistance changes?

Explain how resistance changes with illumination for a light-dependent resistor.

Explain how resistance changes with temperature for a thermistor.

How can lamps and LEDs be used to indicate the presence of a current in a circuit?

Rearrange the equation voltage = current ✕ resistance.

What are the units of voltage, current and resistance?

What is current the rate of flow of?

Explain the equation Q = I × t.

Rearrange the above equation in all ways.

Copy and complete the following sentence: electric current in __________ _____________ conductors is a flow of negatively charged _____________.

Explain with a branching diagram that current is conserved at a junction in a circuit.

What can you say about the voltage across two components connected in parallel?

How can you calculate the currents, voltages and resistances of two resistive components connected in a series circuit?

Finish of this sentence: voltage is the energy transferred per __________________.

Complete this sentence: the volt is a joule per ____________.

Consider the equation: energy transferred = charge × voltage. What are the units of energy, charge and voltage? What are the symbols for energy, charge and voltage?