Consider three LC circuits, first with capacitance C, inductance L, second with capacitance C/2, inductance 2L and third with capacitance 2C, inductance L/2. All All the three capacitors are charged to the same potential V and then made to oscillate. The respective frequencies of the circuits are f1, f2 and f3. Also the currents in the circuits have respective maximum values I1 , I2 and I3. Then