Practice question

Given: A solenoid with 600 turns per meter carries a current of 4 A . What is the magnetic intensity H inside? These values define the system as per NCERT data. Formula: Magnetic intensity H = n I. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Given: n = 600 m^{-1, I = 4 A . Substitute: H = 600 × 4 = 2400 A m^{-1 . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.