lf a source of emf is traversed from positive to negative the potential change will be:
Correct answer: C. Negative
- A. Positive
- B. Zero
- C. Negative
- D. Constant
Explanation
When an emf is traversed from + to − (opposite to the direction it moves positive charge), the change in potential is - emf.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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