# Circuit Questions

9 Questions

Quiz designed for Mrs. Robinson's students who are attempting the 3 credit Unit Standard in Electricity.

• 1.
A series circuit is set up and contains the following: a battery which states '4V' on its side; and two identical lamps.Which statement below is true for this circuit?
• A.

If one lamp breaks, the other will shine more brightly.

• B.

If a voltmeter shows the voltage across the first lamp to be 3 volts, we can assume the voltage across the second lamp will be 1 volt.

• C.

The voltage across each lamp will be 4V, just like the voltage across the battery.

• 2.
A parallel circuit is set up which contains the following: a variable power pack which currently reads '12V'; two lamps in parallel.Which statement below is NOT true for this circuit?
• A.

If we attach voltmeters across the two lamps, both voltmeters will read '12V'.

• B.

If we attach ammeters across the two lamps, both meters will will read '12V'.

• C.

If we attach another lamp and voltmeter in parallel, the third voltmeter will read '12V' too.

• 3.
REMEMBER THE CIRCUIT FROM QUESTION 2..."A parallel circuit is set up which contains the following: a variable power pack which [in question 2 read] '12V'; two lamps in parallel."If we turn the variable power pack so that it reads '6V', and then attach voltmeters across each lamp, what will the voltmeters read?
• A.

The first voltmeter will read 6V; the second will read 3V

• B.

The first voltmeter will read 3V; the second will read 6V

• C.

Both voltmeters will read 3V

• D.

Both voltmeters will read 6V

• 4.
In a SERIES CIRCUIT...
• A.

The CURRENT (Amps) will be the same at any point in the circuit

• B.

The CURRENT will be higher at the end of the circuit

• C.

The CURRENT will be lower at the end of the circuit

• 5.
Which statement is NOT true in a PARALLEL CIRCUIT...
• A.

The number of Amps shown by an ammeter placed right after the power source would be the same as the Amps in each part of the circuit

• B.

The Amps in each parallel wire of the circuit would be equal

• C.

The Amps in each parallel wire of the circuit would add up to the Amps shown by an ammeter put in directly after the power source

• 6.
A SERIES CIRCUIT is set up with the following: a cell with an ammeter right next to it (A1); three lamps, each with an ammeter beside them in series - these are given the names A2, A3 and A4.Which statement is TRUE....
• A.

If A1 reads 6A, A2 and A3 and A4 will each read 2A

• B.

If A1 reads 6A, A2 will read 3A, A3 will read 2A, and A4 will read 1A

• C.

If A1 reads 6A, all the other ammeters will read 6A as well

• 7.
• A.

If A1 reads 6A, the readings on the other three ammeters will add up to 6A; for example, they could read A2=2A, A3 = 2A, A4 = 2A

• B.

If A1 reads 8A, the reading on A2 will be 8A and the reading on each of the other two ammeters will be 4A

• C.

If A1 reads 6A, the readings on the other three ammeters will add up to 6A; for example, they could read A1=2A, A2 = 2A, A3 = 2A

• 8.
Ammeters should always be connected in __________.
• 9.
Voltmeters should always be connected in parallel across a power source, lamp or other c____________.
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