Draw a circuit to show how a cell can be connected to a switch and a lamp, so that the lamp lights up when the switch is closed. Label the components in your circuit.

To determine the resistance $R$ of a resistor, an ammeter and a voltmeter can be used. Draw a circuit diagram to show how you would use these instruments, together with a power supply, to determine $R$.

To determine the resistance $R$ of a resistor, an ammeter and a voltmeter can be used. What quantity does the ammeter measure?

To determine the resistance $R$ of a resistor, an ammeter and a voltmeter can be used. What quantity does the voltmeter measure?

To determine the resistance $R$ of a resistor, an ammeter and a voltmeter can be used. If voltmeter gave a reading of $6.5 \mathrm{V}$ and the ammeter gave a reading of $1.25 \mathrm{A}$, what would be the value of $R$?

Electrical appliances are used to transform electrical energy into other, more useful, forms of energy. Into what useful form of energy does a filament lamp transform electrical energy?