Physics WAEC

A transformer connected to a 240Vr.m.s has 3000 turns in its primary coil and 500 turns in its secondary coil. Calculate the output voltage.

A. 4000V
B. 400V
C. 40V
D. 4V

Explanation

Np=3000turns
Ns=500turns
Ep=240Vr.m.s
Es=?

Ns/Np=Es/Ep
500/3000=Es/240

⟹Es=240×500/3000=40V

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5 years ago

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