What type of current does an electric motor typically use?

• A. Alternating current
• B. Direct current
• C. Both AC and DC
• D. Only low voltage current

Answer: (C)

Electric motors can operate on both alternating current (AC) and direct current (DC), which is why the correct answer reflects this dual capability.

In more detail, AC motors are commonly used in household appliances and industrial equipment due to their efficient operation and the ease of powering them from the electrical grid, which typically provides alternating current. Common types of AC motors include induction motors and synchronous motors.

On the other hand, DC motors are widely used in applications where variable speed control is necessary, as they can easily change speed through adjusting the voltage. This makes them suitable for small devices, electric vehicles, and robotics.

The ability of both AC and DC to drive motors is why the option indicating that both types of current can be used is accurate. By recognizing that both current types have specific applications and advantages, one can appreciate the versatility of electric motors in various fields.