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WAEC Physics 2015 Paper

Question : 41

Total: 50

Solution:

Concept:

In a series circuit, the total e.m.f. is equal to the sum of the voltage drops across the components.

Explanation:

The battery provides a total voltage of

24\text{ V}

The diagram shows that the voltage across resistor P is

14\text{ V}

The remaining voltage is dropped across the part of the circuit containing resistor Q.

Therefore, the voltage across Q is

V_Q = 24\text{ V} - 14\text{ V} = 10\text{ V}

Answer:

10\text{ V}

(Option B)

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