According to Maxwell's theory, the displacement current in vacuum can produce electromotive force on conducting current. However, the displacement current in vacuum does not experience electromotive force from conducting current. The asymmetrical electromotive forces result in non-conserved energy transmission between any two coils involving displacement current and conducting current. In this work, we designed and performed the measurements for such effect. We observed the explicit evidences of non-conserved energy transmission between a toroid solenoid and a parallel plate capacitor. The measured energy increase is well predicted by the numerical estimation.