Exam-style question
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How is electric potential defined in an electric field?.
- A.As the work done per unit charge.
- B.As the force per unit charge.
- C.As the energy per unit mass.
- D.As the charge per unit area.
Model answer
What a good answer should say
- As the work done per unit charge.
Explanation
Why this works
Electric potential is defined as the work done in moving a unit positive charge from infinity to a point in the electric field, which is expressed as V = W/Q.
Common mistake
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