An electric motor converts

Step 1: Analyze the question The question asks what energy conversion takes place in an electric motor. You need to identify the input energy and the output energy.

Step 2: Explain the concept A motor works on the principle that a current-carrying conductor placed in a magnetic field experiences a force (the motor effect). This force makes the coil rotate.

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

A small amount of energy is also lost as heat because of the resistance of the coil and friction. This is a waste product, not the main purpose of the motor.

Step 3: Check each option

• A. Electrical to mechanical: Correct. This is the main function of a motor, such as in a fan, a blender or a water pump.
• B. Mechanical to electrical: This is a generator (dynamo), such as an alternator, which does the reverse of a motor.
• C. Mechanical to chemical: Not what a motor does.
• D. Electrical to thermal: This describes a heating device such as an electric iron or a heater. In a motor, heat is only an unwanted by-product.

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

Exam tip: Remember that "Motor = Moves", so electrical energy goes in and motion comes out. A Generator Gives electricity, so it is the reverse. WASSCE often tests the motor and generator pair, so learn both.