Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 7.1 presents a sketch of the current-voltage graph for an electrical component. The graph is a non-linear curve that begins close to the origin and then rises sharply for positive voltage.
(a(i))[2]

Name the electrical component. Explain how you identified the component from the graph in Fig. 7.1.

(a(ii))[1]

Draw the circuit symbol for this component.

(b(i))[2]

Calculate the resistance of heater A.

(b(ii))[3]

Calculate the energy transferred by heater A in 5.0 minutes.

(b(iii))[2]

Determine the ammeter reading. Show your working.

Worked solution & mark scheme

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