Assertion (A): The work done, in taking a unit charge around a closed loop of an electric circuit involving cells and resistors in the loop, is zero. Reason (R): The potential at a point depends on the location of the point in the loop. After completing one round, the charge comes back to the point of start.

Year	Paper Code	Set	Position
CBSE 2026	Series 55-4	Set 1	Question 13
CBSE 2026	Series 55-4	Set 2	Question 14
CBSE 2026	Series 55-4	Set 3	Question 15

• Step 1: Stating the fundamental formula / law statement (+1 Mark)
• Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
• Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)