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This quiz contains 16 questions from a mix of 1 subtopics.
Which of Kirchhoff's Laws states that the total electromotive force (e.m.f.) in a closed loop equals the sum of the potential differences (p.d.s) across each component?
Kirchhoff's fourth law
Kirchhoff's second law
Kirchhoff's third law
Kirchhoff's first law
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In a series circuit, if the total resistance is 10 Ω, and two of the resistors have resistances 3 Ω and 5 Ω, what is the resistance of the third resistor?
12 Ω
2 Ω
15 Ω
7 Ω
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In a series circuit with a 12 V battery and three resistors of 3 Ω, 6 Ω, and 4 Ω, what is the total resistance?
21 Ω
2 Ω
13 Ω
15 Ω
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Which statement about series circuits is true?
the current varies in different parts of the circuit
the potential difference across each component is the same
total resistance is always less than the smallest individual resistance
total resistance equals the sum of the individual resistances
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What is the term used to describe the rate of flow of charge in a circuit?
current
resistance
power
voltage
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If three resistors rated at 3 Ω, 6 Ω and 4 Ω are connected in parallel, what is their total combined resistance?
2.4 Ω
2 Ω
1.3 Ω
13 Ω
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In a circuit with a battery of 9 V and three resistors in series rated 3 Ω, 6 Ω, and 5 Ω, what is the potential difference across the 6 Ω resistor?
1.8 V
9 V
3 V
3.9 V
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What happens to the current as it passes through resistors connected in series?
it alternates direction
it increases
it stays the same
it decreases
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If two resistors rated at 5 Ω and 15 Ω are connected in parallel across a 10 V battery, what is the total current drawn from the battery?
0.4 A
2.7 A
6 A
3 A
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What quantity refers to the difficulty for charges to flow through a circuit element?
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Give two differences between series and parallel circuits.
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A circuit consists of three resistors in series: 5 Ω, 10 Ω, and 15 Ω. Calculate the total resistance of the circuit.
20 Ω
40 Ω
30 Ω
60 Ω
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In a parallel circuit, there are two resistors, one of 4 Ω and the other of 6 Ω. Calculate the total resistance of the circuit.
1.5 Ω
5 Ω
10 Ω
2.4 Ω
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A series circuit contains a 12 Ω resistor and a 18 Ω resistor. If the circuit is supplied with a total voltage of 15 V, calculate the current flowing through the circuit.
0.75 A
1 A
0.5 A
1.25 A
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A parallel circuit consists of three resistors: 2 Ω, 3 Ω, and 6 Ω. What is the total resistance of this circuit?
1 Ω
1.1 Ω
1.5 Ω
0.75 Ω
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If a series circuit is made of two resistors with resistances of 8 Ω and 12 Ω, and the current flowing through the circuit is 2 A, what is the total voltage across the circuit?
20 V
60 V
40 V
10 V
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