Which statement best describes the relationship between torque and current in an electric motor?

• A. Current increases as torque increases
• B. Current decreases as torque increases
• C. Current stays constant with torque
• D. Current fluctuates independently of torque

Answer: (A)

The main idea is that the torque an electric motor produces is tied to the current flowing in its windings. For a typical motor, torque is proportional to current (T = Kt × I). So when the mechanical load requires more torque, the motor draws more current to produce that extra torque. If the load torque goes up, the current goes up; if the load torque drops, the current drops as well.

Think of it like the motor using electrical energy to create magnetic force that generates turning torque. More current means a stronger magnetic interaction and more torque. This relationship is why, under a fixed supply, increasing the required torque causes an increase in current, up to the motor’s limits.

The other statements don’t fit because a constant current would not allow torque to rise with load, and a current that decreases or varies independently wouldn’t align with the direct, proportional link between current and torque.