Year 9 Electricity

Will the bulbs light?

• Yes

• No

Lightning can provide a pretty impressive display in the sky. The movement of which particle results in this electrical discharge?

• Electron

• Proton

• Neutron

• Quark

Electrons can be found in shells which orbit the nucleus of an atom. What is their charge?

• Positive

• Neutral

• Negative

What does this electrical circuit symbol represent?

• Battery

• Cell

• Bulb

• Switch

A balloon becomes charged when you rub it on a jumper because protons rub off the balloon, leaving it negatively charged.

• True

• False

What does this electrical circuit symbol represent?

• Battery

• Cell

• Bulb

• Switch

Which of the following are electrical conductors?

• 
• 
• 
• 

A series circuit is preferable for wiring Christmas tree lights because if one bulb breaks the rest will remain on.

• True

• False

Increasing the number of bulbs in a series circuit will ...

• Decrease the brightness of all the bulbs

• Increase the brightness of all the bulbs

• Decrease the brightness of some of the bulbs

• Increase the brightness of some of the bulbs

Parallel circuits allow components to be controlled independently by placing a switch on each branch beside each component.

• True

• False