Practice question

Given: A wheel with 6 spokes of 0.6 m each rotates at 45 rpm in a 0.5 T field. What is the induced emf? These values define the system as per NCERT data. Formula: omega = 2π × 45/60 = 1.5π rad/s. This is standard NCERT relation. Substitution & Calculation: varepsilon = 1/2 B omega R² = 1/2 × 0.5 × 1.5π × (0.6)² = 0.8478 V approx 0.85 V . Result: The computed value matches expected outcome and confirms correct choice as per NCERT.