Question on: JAMB Physics - 2024
What is the inductance reactance of a coil of 7 H when connected to a 50 Hz a.c circuit?
A
2200 Ω
B
2000 Ω
C
1200 Ω
D
1100 Ω
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Correct Option: A
The inductive reactance (XL) of a coil in an AC circuit is given by the formula:
XL = 2πfL
Where:
- f is the frequency of the AC current (in Hertz)
- L is the inductance of the coil (in Henries)
Given:
- L = 7 H
- f = 50 Hz
Calculate XL:
XL = 2 x π x 50 x 7 ≈ 2200 Ω
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