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
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\frac{E_s}{E_p} = \frac{N_s}{N_p} ; \frac{120}{240}= \frac{N_s}{5500} thus N_s\)=2750
Source: Myschool Past Questions Archive (Record #26267)