Physics Circle home Student Login

Home›Chapters›Alternating Current PYQs›LC Oscillations›Question 5

MHT CET 2026 (18 Apr, Shift 1) · LC Oscillations

LC Oscillations question from MHT CET 2026 (18 Apr, Shift 1)

Q5MHT CET 2026 · 18 APR · SHIFT 1Easy

LC Oscillations

In an oscillating LC circuit, the maximum charge on the capacitor is Q. When the energy is stored equally between the electric and magnetic fields, the charge on the capacitor becomes

Show answer and solution

Answer: (a)

  1. Total energy U=Q22CU = \frac{Q^2}{2C}. Equal sharing means UE=U2U_E = \frac{U}{2}.
  2. q22C=12⋅Q22C⇒q2=Q22\frac{q^2}{2C} = \frac{1}{2}\cdot\frac{Q^2}{2C} \Rightarrow q^2 = \frac{Q^2}{2}
  3. So the answer is (a) Q2\frac{Q}{\sqrt{2}}.
Report a mistake

More questions on LC Oscillations