9.1 Current Topic Review [Must do] 2

Current is the rate of flow of charge or (a)   around a circuit.

• particles

• lamps

• electrons

• cells

Which circuit diagram shows a lamp, motor and switch connected in series?

• A

• B

• C

• D

The arrow is pointing to a voltmeter. What does a voltmeter measure, and what unit does it measure in? Select two options.

• resistance

• current

• volts

• potential difference

• amps

The arrow is pointing to an ammeter. What does an ammeter measure, and what unit does it measure in? Select two options.

• current

• resistance

• amps

• potential difference

• volts

What does ammeter 1 read? Include the unit symbol A in your answer. Give your answer to 2 significant figures.

• 0 A

• 1.5 A

• 2.0 A

• 3.5 A

In the circuit shown, ammeters 1 and 3 both read 1.5 A. What does ammeter 2 read? Include the unit symbol A in your answer. Give your answer to 2 significant figures.

• 0 A

• 1.5 A

• 3.0 A

• 2.0 A

In the circuit shown, ammeters 1 and 2 both read 2.0 A, and ammeter 3 reads 1.0 A, what does ammeter 4 read?

• 0 A

• 1 A

• 2 A

• 3 A

In the circuit shown, all three ammeters read 0.1 A. If lamp 1 breaks, what will the new reading on ammeter 1 be?

• 0 A

• 0.1 A

• 0.2 A

In the circuit shown, if lamp 1 breaks, what will the new reading on ammeter 3 be?

• 0.0 A

• 1.0 A

• 2.0 A

If using one cell in this circuit gives an ammeter reading of 1.0 A, what will the reading be if you use two cells? Include the unit symbol A in your answer. Give your answer to two significant figures.

• 2.0 A

• 1.5 A

• 0.5 A

• 1.0 A