Question

What is electricity

Answer 1

electricity is a branch of Physics in which we study about charge and electric current..

Answer 2

Electricity is created when electrons flow through a conducting material, such as the copper or aluminium used in power lines.

Electrons are tiny particles that are part of all matter and are so small that they can move through wires.

In New Zealand, the energy in falling water is the main source of electricity generation; this is referred to as hydro generation. In 2014, nearly 60 per cent of New Zealand’s electricity was generated by hydro.

Hydro generation works by holding water from a lake or a river in a dam and releasing it down a large pipe, called a penstock. When the water comes out of the penstock and hits the blades of the turbine, the force of the water causes the blades of the turbine to spin. A turbine is like a large propeller and it’s attached to a generator, which consists of huge magnets that spin inside massive coils of conducting wire. The magnetic field from the spinning magnets pushes the electrons through the wire coils. 

The movement of the electrons through the wire is known as electricity.


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