Practice question

Given: A coil of 40 turns experiences a magnetic flux change from 0 to 0.01 Wb in 0.05 s. What is the induced emf? These values define the system as per NCERT data. Formula: varepsilon = N Δ Phi/Δ t. This is standard NCERT relation. Substitution & Calculation: Δ Phi = 0.01 Wb, Δ t = 0.05 s, N = 40 . varepsilon = 40 × 0.01/0.05 = 40 × 0.2 = 8 V . Result: The computed value matches expected outcome and confirms correct choice as per NCERT.