Making a Simple Circuit

An electrical circuit can be made up from components such
as copper wire, batteries, switches, lamps etc.

There is one very important rule for any circuit to work - All
the components used should produce a continuous loop
that connects to the power supply.

The loop should contain:

  • A battery or power source (with a known voltage or electromotive force (e.m.f.).

  • Connecting wires to let the energy flow from the battery to the other components. This
    flow is known as current.

  • Components in the circuit which offer a resistance to
    the current.