Practice question

Given: A rectangular loop of area 0.03 m² with 20 turns carries 2 A in a field of 0.7 T at 45° to the plane. What is the torque? These values define the system as per NCERT data. Formula: tau = N I A B sin θ, where θ = 45° to plane means sin 45° with normal. This is standard NCERT relation. Substitution & Calculation: tau = 20 × 2 × 0.03 × 0.7 × sin 45° = 0.84 × 0.707 = 0.5939 approx 0.59 N m . Result: The computed value matches expected outcome and confirms correct choice as per NCERT.