The sum of the e.m.f and potential differences around a closed circuit is zero is a consequence of:
Correct answer: C. Conservation of energy
- A. Ohm's law
- B. Newton's 2nd law
- C. Conservation of energy
- D. Conservation of charge
Explanation
The second law of Kirchoff states that around any closed loop in a circuit, the sum of potential differences and emf is zero. This is a result of the law of conservation of energy.
This question appeared on the ETEA MDCAT 2015 paper, which you can sit online with every answer explained.
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