Class 12 NEET Physics Electromagnetic Induction and Alternating Currents

The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux ϕ linked with the primary coil is given by ϕ=ϕ0+4t, where ϕ is in webers, t is time in seconds and ϕ0 is a constant, the output voltage across the secondary coil is