Write the expression for the magnetic field due to a current element in vector form. Consider a $1\text{ cm}$ segment of a wire, centered at the origin, carrying a current of $10\text{ A}$ in positive x-direction. Calculate the magnetic field $\vec{B}$ at a point $(1\text{ m}, 1\text{ m}, 0)$.

Year	Paper Code	Set	Position
CBSE 2026	Series 55-5	Set 1	Question 23
CBSE 2026	Series 55-5	Set 2	Question 26
CBSE 2026	Series 55-5	Set 3	Question 28

• 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)