A transformer with 55500 turns in its primary is used between a 240V a. c supply and a 120V kettle. Calculate the number of turns in the secondary

A transformer with 55500 turns in its primary is used between a 240V a. c supply and a 120V kettle. Calculate the number of turns in the secondary

A 11000
B 2750
C 460
D 232
E 10

waec 1988 physics

The correct answer is B. 2750

E_p/E_s = n_p/n_s

240/120 = 5500/n_s

=> n_s = 2750

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