The voltage of the domestic electric supply is represented by the equation V = 311
PHYSICS
JAMB 1997
The voltage of the domestic electric supply is represented by the equation V = 311 sin314.2t. Determine the frequency of the a.c. supply [\(\pi\) = 3.142]
- A. 50.0Hz
- B. 100.0Hz
- C. 311.0Hz
- D. 314.2Hz
Correct Answer: A. 50.0Hz
Explanation
V = 311 sin314.2t compare with,
V = V sin2\(\pi\)Ft
2\(\mu\)F = 314.2
F = \(\frac{314.2}{2 \times\ 3.142}\)
F = 50Hz
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