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Consider the following two statements: (A) Kirchhoff's junction law follows from the conservation of charge. (B) Kirchhoff's loop law follows from the conservation of energy. Which of the following is correct?

1. Both (A) and (B) are wrong
2. (A) is correct and (B) is wrong
3. (A) is wrong and (B) is correct
4. Both (A) and (B) are correct

Correct answer: Both (A) and (B) are correct

Solution

Kirchhoff's junction law is based on the conservation of charge, as the total current entering a junction equals the total current leaving it. Kirchhoff's loop law is based on the conservation of energy, as the sum of potential differences in a closed loop is zero. Thus, both statements are correct.

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