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JAMB Physics 2022 Paper

Question : 10

Total: 40

\Omega

Solution:

Concept:

Lost voltage is the voltage wasted inside the cell due to its internal resistance.

Explanation:

Lost voltage is given by the formula:

V_{\text{lost}} = I r

Where

I = 4 \, \text{A}

is the current and

r = 0.55 \, \Omega

is the internal resistance.

Substitute the values:

V_{\text{lost}} = 4 \times 0.55 = 2.20 \, \text{V}

Therefore, the lost voltage of the cell is

2.20 \, \text{V}

Answer:

2.20 \, \text{V}

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