Practice question

Given: A wire of length 0.8 m carrying 5 A is at 30° to a magnetic field of 0.8 T . What is the force on the wire? Formula: Force F = I l B sin θ. Substitution & Calculation: F = 5 × 0.8 × 0.8 × sin 30° = 4 × 0.8 × 0.5 = 1.6 N . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.