Physics for CXC is a complete course book covering all the physics required for the CXC syllabus. All topics are carefully explained from a basic starting point which assumes very little prior knowledge or mathematical skill.Magnetism and electricity at work c) A small current in the input circuit can switch a large current in the output circuit. ... the absence of the magnet the iron reeds lose their magnetism, close their contacts and switch on the burglar alarm circuit.
|Title||:||Physics for CXC|
|Publisher||:||Nelson Thornes - 1999-06-01|