What are the three main areas of the electrical supply industry?

Electrical power is transmitted at high voltages over power lines made of what material?

What are the four main things in the WHS legislation in your state requires you to do at work?

What is meant by 'sustainable energy principles'?

Sustainable energy is made up of two parts. What are they?

What is a voltage, and what must there be for a voltage to occur between two points?

How many electrons are there in one coulomb?

Although electrons flow from a negative potential to a positive potential, we regard current as flowing from positive to negative. Why is this?

If 12.5 coulombs of electrons are passing a point every second, what is the value of the current?

You measure a current of 25 amperes in a circuit. Write this by using the symbols for current and amperes.

Why does copper have less resistance to current flow than an insulating material such as oil?

Does gold have a higher or lower resistance to an electric current than copper?

Which metal has the least resistance, and where is it typically used in electrotechnology applications?

Name two situations in the electrotechnology industry where you might come into contact with lead. What precautions should you take when handling lead?

Explain the term 'resistance', and give its measurement unit and symbol.

What is the condition called in a circuit when a conductor is disconnected?

When you measure a voltage, how is the voltmeter connected?

You need to measure the current in a circuit. What must be done to connect the ammeter?