Resistance in Circuits Worksheet
Explore the concept of electrical resistance, Ohm's Law, and factors affecting resistance with this Grade 9 Science worksheet.
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Resistance in Circuits
Name:
Date:
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What is the unit of electrical resistance?
Ampere
Volt
Ohm
Watt
2. Which of the following factors does NOT affect the resistance of a wire?
Length of the wire
Material of the wire
Thickness of the wire
Voltage across the wire
3. Ohm's Law states that voltage is directly proportional to current, provided the remains constant.
4. Resistors are components used to the flow of current in an electrical circuit.
5. Good conductors have electrical resistance, while insulators have electrical resistance.
6. A circuit has a voltage of 12V and a current of 2A. Calculate the resistance of the circuit.
7. Explain how the length of a wire affects its resistance.
8. Increasing the temperature of a metallic conductor generally increases its resistance.
True
False
9. A thick wire has more resistance than a thin wire of the same material and length.
True
False
10. Observe the image of resistors below. What is the primary function of these components in an electrical circuit?
