A transformer with 5500 turns in its primary winding is used between a 240V a.c...
PHYSICS
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
Correct Answer: B. 2750
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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