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
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