A transformer has a primary coil with 500 turns and a secondary coil with 2500...

JAMB 1985

A transformer has a primary coil with 500 turns and a secondary coil with 2500 turns. When the voltage input to the primary coil is 120V, the output is

A. 6000V
B. 600V
C. 240V
D. 60V
E. 24V

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Correct Answer: Option B

Explanation

For transformers, \(\frac{V_p}{V_s}\) = \(\frac{N_p}{N_s}\) = \(\frac{I_p}{I_s}\)

\(\frac{500}{2500}\) = \(\frac{120}{V_s}\)

V_s = 600v

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A transformer has a primary coil with 500 turns and a secondary coil with 2500...

Correct Answer: Option B

Explanation

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