Practice Electromotive Force (emf) (8.3) - Current Electricity

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10 questions

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6 sample questions

Question 1.
What does EMF stand for?
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Think about what energizes a circuit.
Question 2.
Which unit is used to measure EMF?
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It's the same unit used for potential difference.
3Question 3.
What does EMF stand for?
- Energy Motion Force
- Electromotive Force
- Energy Magnetic Force
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Recall what energizes electrical systems.
4Question 4.
True or False: EMF is measured with current flowing.
- True
- False
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Think about the battery's current state.
Question 5.
A battery has an EMF of 9 V. If it supplies 500 joules of energy to move charge through a circuit, how much charge has it moved?
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Think about how energy and charge relate through EMF.
Question 6.
If a battery experiences an internal resistance that causes a drop of 1 V under load, what would be the effective EMF when a current of 2 A flows?
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Reflect on how internal resistance impacts output voltage.

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