Year 9 Circuits Revision

The wire within a power cord is an example of a/an...

• insulator

• conductor

• battery

• switch

What are the two kinds of electricity we explored in class?

• positive and negative

• series and parallel

• hydro and static

• static and current

What type of charge do electrons carry?

• Positive

• Negative

• Neutral

• Strong

Opposite electrical charges...

• Attract each other

• Lead to explosions

• Cancel out each other

• Repel each other

Which of the following is NOT an example of static electricity?

• plasma ball

• balloon and hair

• The circuit in a light bulb

• socks on the carpet

In what direction do electrons flow?

• Electrons do not flow

• In a circle

• From a positive area to a negative area

• From a negative area to a positive area

If one of the lights goes out in a series circuit what happens to the rest of the bulbs?

• They become brighter

• They become dimmer

• Nothing happens

• They go out

What does this diagram mean?

• An open switch

• A battery

• A closed switch

• A cell

What does the ammeter measure?

• The electric potential

• The current

• The resistance

• The number of electrons

When adding more lightbulbs to a parallel circuit what occurs to the lights?

• The first bulb is the brightest, the ones after progressively get dimmer.

• The bulbs become brighter the further away they are from the battery

• The bulbs all become slightly dimmer but glow the same as one another.

• The bulbs begin to spark or explode