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JAMB Physics 2024 Paper

Question : 43

Total: 125

Solution:

Concept:

Inductive reactance measures how a coil opposes alternating current, calculated from the formula

X_L = 2\pi f L

Explanation:

Given inductance,

L = 7\ \mathrm{H}

and frequency,

f = 50\ \mathrm{Hz}

Substitute these values into the formula:

X_L = 2\pi f L = 2 \times 3.142 \times 50 \times 7

Simplifying:

X_L = 2199.4\ \Omega

Rounded to the nearest whole number, this gives

2200\ \Omega

Answer:

2200\ \Omega

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