Assertion (A): Kirchhoff's voltage law indicates that the electric field is conservative. |
Reason (R): Potential difference between two points in a circuit does not depend on the path. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: A
Solution :
Option [a] is correct. |
Explanation: Kirchhoff's voltage law says that the sum of the voltages around any closed loop is zero. A dosed loop starts from a node, traces a path through the circuit and returns to the same node. Since the total work done in moving a charge around this close path the zero, hence the electric field is conservative. So, the assertion is true. |
Potential difference between two points in a circuit does not depend on the path. This is true for conservative field. Hence the reason is also true and it explains the assertion. |
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