An electric current source is actually a source of:
Correct answer: B. Energy
- A. Current
- B. Energy
- C. Charge
- D. Power
Explanation
A source of EMF, like a battery or generator, does not create charge but provides the energy to move existing charges through a circuit. It converts another form of energy (chemical, mechanical, etc.) into electrical potential energy.
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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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1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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