Practice Resistance In Electric Circuits (3.3) - Cell Groupings and Resistances

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9 questions

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6 sample questions

Question 1.
What is the unit of resistance?
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It’s named after a German physicist.
Question 2.
Name one factor that affects resistance.
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Think about what makes it easier or harder for electrons to flow.
3Question 3.
What is resistance?
- A measure of electric current
- Opposition to the flow of electric current
- The speed at which electrons move
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It sounds like a barrier to electricity.
4Question 4.
True or False: Resistance decreases with an increase in conductor length.
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Consider the travel distance.
Question 5.
A 50-meter long wire of aluminium (resistivity $2.65 × 10^{-8} \Omega.m$ ) has a cross-sectional area of 2 mm². Calculate the resistance of the wire.
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Make sure units are consistent before calculating.
Question 6.
Describe how you would set up an experiment to measure the resistance of different wire materials.
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Consider safety measures and equipment needed.

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