The primary and secondary coil of the transformer have 50 and 1500 turns respectively. If the magnetic flux ? linked with the primary coil is given by ? = ?￢ﾂﾀ + 4t, where ? is in webers, t is time in seconds and ?￢ﾂﾀ is the constant, the output voltage across the secondary coil is

Options

(a) 120 volts
(b) 220 volts
(c) 30 volts
(d) 90 volts

Correct Answer:

120 volts

Explanation:

Vₛ / Vₚ = Nₛ / Nₚ where
Nₛ = No. of turns across primary coil = 50
Nₚ = No. of turns across secondary coil = 1500
and Vₚ = d? / dt = d/ dt( ?￢ﾂﾀ + 4t) = 4
⇒ Vₛ = 1500 / 50 x 4 = 120 V