Why inrush current has a positive peak?

Inrush current has a positive peak because it represents the initial surge of electrical current when a device, such as a motor or transformer, is first energized. This peak occurs as the system attempts to rapidly establish the magnetic field necessary for operation, resulting in a brief but substantial increase in current. The positive peak reflects the instantaneous demand for power to overcome inertia and other resistive forces, before settling down to the normal operating current once the device stabilizes.