A transformer has 300 turns of wire in the primary coil and 30 turns in…

A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil.If the input voltage is 100 volts, the output voltage is

Correct Answer: Option B

Explanation

for transformer,
Es = Ns, Es = e.m.f of secondary
Ep = Np, Ep = e.m.f of primary
NS = number of turns in secondary
Ns = number of turns in primary
(frac{30}{300}) = (frac{x}{100})
300X = 3000X
= 10 volts