An electric fence system is used on farms to contain livestock. The system consists of:
Radio waves are electromagnetic waves. State two properties that are common to all electromagnetic waves.
Which of these electromagnetic radiations has a frequency greater than visible light?
The transformer supplies an output voltage of 6000 V a.c. to the fence wire. The input voltage to the transformer is 240 V a.c.
Give the name of this type of transformer.
State the relationship between input (primary) voltage, output (secondary) voltage, primary turns, and secondary turns.
There are 150 turns150\text{ turns}150 turns on the primary coil. Calculate the number of turns on the secondary coil.
Suggest a reason why the wire is supported by plastic insulators on the wooden posts.
20 exam-style questions on Edexcel IGCSE Physics Electromagnetic induction. Each one has a worked solution and a mark scheme showing where the marks go.