Practise Edexcel A-Level Physics induced EMF in linked coils by explaining mutual induction, coil turns and changing current.
A student carried out an investigation to compare the energy stored in a mechanical mouse trap with the energy stored in an electronic mouse trap.
The electronic mouse trap works by applying a large potential difference (p.d.) across two metal plates. The diagram shows part of the circuit for the electronic mouse trap.
*(i) The transformer T consists of two coils wound around a single iron core. An alternating p.d. is applied to the input coil and the output coil is connected, through a diode, to a capacitor.
Explain how applying a p.d. across the input coil causes the capacitor to charge.