After connecting a dual-voltage motor to a high-voltage circuit, the current through each motor winding:

When a dual-voltage motor is connected to a high-voltage circuit, the behavior of the current through each motor winding is determined by the relationship between voltage and current in electrical systems. According to Ohm's Law (I = V/R), where I is the current, V is the voltage, and R is the resistance, when the voltage increases while the resistance remains constant, the current should typically increase. However, for dual-voltage motors, they are designed to operate at either a lower or higher voltage effectively.

When operated at a higher voltage than they were designed for, the current actually decreases. This is because the motor's internal impedance and design allow it to draw only a fraction of the current at a higher voltage, thus enabling it to operate efficiently without overheating or drawing excessive power. In essence, the increased voltage leads to a reduction in current draw as per the principles of motor operation and efficiency.

In this scenario, the understanding that current through each motor winding is now lower aligns with the operation characteristics of dual-voltage motors when connected to a high-voltage source, primarily due to their designed relationship to voltage and current as they shift from one operational mode to another.