.An inductor of inductance 10 H is connected across an a.c circuit source of 50
PHYSICS
WAEC 2022
.An inductor of inductance 10 H is connected across an a.c circuit source of 50 V, 100 Hz. What is the current in the circuit? [π = 3.14]
- A. 0.200A
- B. 0.070A
- C. 0.050A
- D. 0.008A
Correct Answer: D. 0.008A
Explanation
Given Data: L = 10, V = 50, F = 100, I = ?
Inductive Reactance [X\(_L\)] = 2\(\pi\)FL → 2 * 3.14 * 100 * 10
X\(_L\) = 6,280
Current[I] = \(\frac{V}{X_L}\) → \(\frac{50}{6280}\)
I = 0.0079
≈ 0.008A
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