Electricity Test

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• contact.
• static electricity

Static electricity is:

• electricity flowing in a wire
• the buildup of electric charges on an object
• when protons move between objects
• always deadly

Which of the following an insulator?

• copper
• wood
• silver
• salt water

Lightning is _____.

• a buildup of neutrons
• harmless
• a high-voltage electric current
• a large discharge of static electricity

Opposite charges do what to each other?

• attract
• repel
• nothing
• ionise

Resistance is measured in what unit?

• ohms
• amps
• watts
• volts

Current is measured in what unit?

• ohms
• volts
• watts
• amps

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

What happens to the brightness of the light bulbs in a series circuit when you add more lights.

• Each bulb gets dimmer
• Each bulb remains the same
• Half of the bulbs get dimmer
• Each bulb gets brighter

Does this diagram represent a series or parallel circuit?

• series circuit
• parallel circuit