Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

A $9.0\text{ V}$ battery is joined to a $120\Omega$ resistor in series with wire P. Fig. 8.1 shows a voltmeter placed across the $120\Omega$ resistor.
(a)[2]

State the energy changes happening in the circuit.

(b(i))[2]

Calculate the current flowing through the $120\Omega$ resistor.

(b(ii))[1]

Calculate the p.d. across wire P.

(b(iii))[1]

Calculate the resistance for wire P.

(c)[4]

Calculate the resistance for wire Q.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Transfer of energy from chemical to thermal/heat” …

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