A transformer with 5500 turns in its primary winding is used between a 240V a.c...

WAEC 1994

A transformer with 5500 turns in its primary winding is used between a 240V a.c supply and 120V kettle. Calculate the number of turns in the secondary winding

A. 11000
B. 2750
C. 460
D. 550
E. 232

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Correct Answer: Option B

Explanation

\(\frac{E_s}{E_p} = \frac{N_s}{N_p} ; \frac{120}{240}= \frac{N_s}{5500} thus N_s\)=2750

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A transformer with 5500 turns in its primary winding is used between a 240V a.c...

Correct Answer: Option B

Explanation

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