Physics 0625 · IGCSE · Electrical quantities

Electrical quantities — practice question

An electric heater contains a resistance wire with resistance $26\,\Omega$. The power lost in the resistance wire is $2500\,\text{W}$.
(a)[3]

Calculate the current in the resistance wire.

(b)[3]

Calculate the resistance of this wire.

(c)[2]

Calculate the cost of using the heater continuously for two days.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct current is I = 9.8 A” …

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