Practice question

Given: A parallel plate capacitor with C = 70 pF in air has a dielectric ( K = 5 ) inserted fully between plates. What is the new capacitance? These values define the system as per NCERT data. Formula: C' = K C = 5 × 70 = 350 pF .. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Substituting values like 1.2 × 10⁻⁵, 236 J kg⁻¹ K⁻¹, CH₃CH₂NH₂ etc. into the formula and simplifying step by step. 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.