Electric motor primarily converts?

Step 1: Analyze the question The question asks what energy conversion an electric motor mainly performs. Look at what goes in and what comes out.

Step 2: Explain the concept An electric motor works on the motor effect. When a current-carrying conductor (the coil) is placed in a magnetic field, it experiences a force. Fleming's Left-Hand Rule gives the direction of this force. The force makes the coil rotate, and that rotation can drive a fan, pump, grinding machine, and so on.

• Input: electrical energy (from the battery or mains)
• Output: mechanical energy (rotation, which is kinetic energy of motion)

Step 3: Check each option

• A. Electrical to chemical: This is what happens when a battery is being charged or during electrolysis. It is not what a motor does.
• B. Kinetic to potential: This is what happens when a ball is thrown upward. It has nothing to do with a motor.
• C. Electrical to mechanical: This is correct, because the motor uses electric current to produce rotational motion.
• D. Electrical to heat: This is what a heater, electric iron, or kettle does. A motor does produce some heat, but that is an unwanted energy loss, not its main purpose. The word "primarily" in the question points away from this option.

Step 4: Answer The correct option is C. electrical energy to mechanical energy.

Exam tip: Remember the reverse pair. A motor turns electrical energy into mechanical energy, while a generator (dynamo) turns mechanical energy into electrical energy. Also, when you see the word "primarily", ignore side effects like heat losses and choose the main purpose of the device.