Spec 1PH0
Revise Edexcel GCSE Physics 13.2.2 The transformer turns-ratio equation with the question bank and revision guides.
Use the turns ratio equation for transformers to calculate either the missing voltage or the missing number of turns: (potential difference across primary coil) ÷ (potential difference across secondary coil) = (number of turns in primary coil) ÷ (number of turns in secondary coil); Vp ÷ Vs = Np ÷ Ns.
