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WorksheetsSeries and Parallel Circuits
Total questions: 14
Worksheet time: 7mins
Which circuit diagram represents the correct way to measure the current in a resistor?
When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in
series with multiple current pathways
series with one current pathway
parallel with multiple current pathways
parallel with one current pathway
A 3-ohm resistor and a 6-ohm resistor are connected in parallel across a 9-volt battery. Which statement best compares the potential difference across each resistor?
The potential difference across the 6-ohm resistor is four times as great as the potential difference across the 3-ohm resistor.
The potential difference across the 6-ohm resistor is half as great as the potential difference across the 3-ohm resistor.
The potential difference across the 6-ohm resistor is the same as the potential difference across the 3-ohm resistor.
The potential difference across the 6-ohm resistor is twice as great as the potential difference across the 3-ohm resistor.
Circuit A has four 3.0-ohm resistors connected in series with a 24-volt battery, and circuit B has two 3.0-ohm resistors connected in series with a 24-volt battery. Compared to the total potential drop across circuit A,
the total potential drop across circuit B is
four times as great
twice as great
the same
one-half as great
A 3.0-ohm resistor and a 6.0-ohm resistor are connected in series in an operating electric circuit. If the current through the 3.0-ohm resistor is 4.0 amperes, what is the potential difference across the 6.0-ohm resistor?
12 V
24 V
2.0 V
8.0 V
A 2.0-ohm resistor and a 4.0-ohm resistor are connected in series with a 12-volt battery. If the current through the 2.0-ohm resistor is 2.0 amperes, the current through the 4.0-ohm resistor is
1.0 A
4.0 A
2.0 A
3.0 A
A 6.0-ohm lamp requires 0.25 ampere of current to operate. In which circuit below would the lamp operate correctly when switch S is closed?
The diagram above represents a circuit consisting of two resistors connected to a source of potential difference.
What is the current through the 20.-ohm resistor?
12 A
6.0 A
4.0 A
0.25 A
The circuit diagram above represents four resistors connected to a 12-volt source. What is the total current in the circuit?
2.0 A
0.50 A
24 A
8.6 A
In the electric circuit diagram above, possible locations of an ammeter and a voltmeter are indicated by circles 1, 2, 3, and 4.
Where should an ammeter be located to correctly measure the total current, and where should a voltmeter be located to correctly measure the total voltage?
ammeter at 1 and voltmeter at 2
ammeter at 3 and voltmeter at 4
ammeter at 2 and voltmeter at 3
ammeter at 1 and voltmeter at 4
A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of the circuit?
45.0 ohms
4.62 ohms
1.95 ohms
0.200 ohms
Three resistors, 4 ohms, 6 ohms, and 8 ohms, are connected in parallel in an electric circuit. The equivalent resistance of the circuit is
between 4 ohms and 8 ohms
less than 4 ohms
18 ohms
between 10. ohms and 18 ohms
The diagram above represents an electric circuit consisting of four resistors and a 12-volt battery.
What is the current measured by ammeter A shown in the diagram?
4.0 A
72 A
2.0 A
0.50 A
The diagram below represents an electric circuit consisting of four resistors and a 12-volt battery.
What is the equivalent resistance of the circuit shown?
72 ohms
3.0 ohms
0.33 ohms
18 ohms
