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Worksheets10.4 Series and Parallel Circuits
Total questions: 20
Worksheet time: 10mins
What is the main characteristic of a series circuit?
The voltage is the same across all components.
The current takes a single path.
The current takes multiple paths.
The resistance is always zero.
In a parallel circuit, how is the current distributed?
The current is divided among the branches.
The current is the same in all branches.
The current is only in one branch.
The current is zero in all branches.
What principle is used to determine voltages and currents in circuits?
Newton's Laws
Conservation of Energy
Conservation of Charge
Conservation of Mass
What is true about resistors in series?
They have the same voltage drop.
They have infinite resistance.
They have zero resistance.
They have the same current passing through each.
What is true about resistors in parallel?
They have the same voltage drop across each.
They have zero voltage drop.
They have the same current passing through each.
They have infinite current.
In a series circuit with two 100 ohm resistors and a 12V battery, what is the current?
6.0 A
1.2 A
0.12 A
0.06 A
In a parallel circuit with two 100 ohm resistors and a 12V battery, what is the total current drawn?
1.2 A
0.24 A
0.12 A
0.06 A
What is the equivalent resistance of two 100 ohm resistors in series?
400 ohms
200 ohms
100 ohms
50 ohms
What is the equivalent resistance of two 100 ohm resistors in parallel?
400 ohms
200 ohms
100 ohms
50 ohms
What is the efficiency of a circuit with a wire resistance of 1 ohm and load resistance of 10 ohms?
50%
75%
91%
100%
What is the power dissipated in the load if the total power is 3.3W and wire losses are 0.3W?
0.3 W
0.6 W
3.3 W
3.0 W
What is the resistance of a lightbulb designed to have a power of 100W with a current of 10A?
0.1 ohms
100 ohms
1.0 ohms
10 ohms
What is the voltage drop across a filament with a resistance of 1 ohm and a current of 10A?
100.0 V
10.0 V
1.0 V
0.1 V
What happens to the current in a parallel circuit when a second path is added?
The current becomes zero.
The current increases.
The current remains the same.
The current decreases.
What is the main advantage of a parallel circuit over a series circuit?
Less current drawn
More current drawn
Higher voltage
Lower resistance
What is the role of wire resistance in a circuit?
It is proportional to the wire's length.
It is typically ignored.
It decreases the current.
It increases the voltage.
What is the main characteristic of direct current circuits?
Resistance is infinite.
Voltage is always zero.
Current flows in one direction.
Current flows in multiple directions.
What is the main characteristic of alternating current circuits?
Resistance is infinite.
Current flows in one direction.
Current reverses direction many times a second.
Voltage is always zero.
What is the purpose of maximizing circuit efficiency?
To decrease current
To increase resistance
To lower costs
To increase voltage
What did Edison recognize about the lightbulb?
It is a resistor that converts electricity into heat and light.
It is a source of infinite energy.
It does not obey electrical laws.
It has zero resistance.
