Exam-style question
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What is the formula for electromotive force (emf) in terms of energy supplied per unit charge?.
- A.emf = energy supplied / charge
- B.emf = charge / energy supplied
- C.emf = energy supplied x charge
- D.emf = energy supplied + charge
Model answer
What a good answer should say
- emf = energy supplied / charge
Explanation
Why this works
The correct formula for electromotive force (emf) is defined as the energy supplied per unit charge. This relationship is fundamental in understanding how cells provide energy to circuits.
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