NEET 2010 Physics question

Physics Current Electricity NEET 2010

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 correctCorrect

Answer: (4)

Solution

Kirchhoff's junction (current) law states that the algebraic sum of currents at a junction is zero; charge cannot accumulate at a junction in steady state, so it expresses conservation of charge: (A) is correct. Kirchhoff's loop (voltage) law states that the

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Question ID VK-090503