End of Group 9 Written Test

Electricity is the flow of:

• Protons.

• Neutrons.

• Electrons.

• Atoms.

What is the conventional direction of DC current flow?

Briefly define an insulator?

What is the maximum permissible voltage drop generally accepted in an operational circuit?

2,500 Ohms can also be represented as:

Insulators are materials, which offer a lot of opposition to the flow of current, this is because they possess relatively few free:

• electrons.

• protons.

• neutrons.

• atoms.

When measured at different points the current in a series circuit will:

When measured at different points the current in a parallel circuit will:

Briefly define a Diode.

An LED is a type of: