Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

Fig. 8.1 depicts a circuit. The lamp’s resistance is 3.0 Ω, and line XY is a uniform resistance wire with resistance 6.0 Ω.

(a)[2]

Calculate the reading shown by the ammeter.

(b)[4]

Calculate the circuit resistance.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Rₛ = R₁ + R₂ + R₃; I = V / R” …