Electric motor worksheet

📚 Topic Summary

An electric motor is a device that converts electrical energy into mechanical energy. It operates on the principle of electromagnetic induction, where a current-carrying conductor placed in a magnetic field experiences a force. This force causes the motor's rotor to rotate, performing useful work.

Electric motors are essential components in many devices we use daily, from household appliances like fans and washing machines to industrial machinery and electric vehicles. Understanding how they work is crucial for anyone studying physics or engineering!

🧠 Part A: Vocabulary

Match the following terms with their correct definitions:

1. Terms:
   • 🧲 Stator
   • 🔄 Rotor
   • ⚡ Commutator
   • میدان Magnetic Field
   • 🔋 Armature
2. Definitions:
   • 🌀 The rotating part of an electric motor.
   • 🔌 A component used to periodically reverse the current direction in a DC motor.
   • ثابت The stationary part of an electric motor.
   • 🧲 The area around a magnet where magnetic force is exerted.
   • ⚙️ The wire coils in which current is induced.

(Match 1 to the correct definition, 2 to the correct definition, etc.)

✍️ Part B: Fill in the Blanks

Complete the following paragraph using the words provided (Words: magnetic, electrical, torque, current, rotate):

An electric motor converts ________ energy into mechanical energy. When a ________ flows through a coil in a ________ field, it generates a force that causes the motor to ________. This force creates ________, which is the rotational force that drives the motor's output.

🤔 Part C: Critical Thinking

Explain how increasing the strength of the magnetic field in an electric motor affects its performance. Provide a detailed explanation of the relationship between the variables involved, using equations where applicable.