Electric motor

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/electric-motor

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the fundamental principle?Conversion of electrical energy to mechanical energy via electromagnetic forces (Lorentz force)
2. What is the key historical period for practical motors?Late 19th century, with significant contributions from Siemens, Tesla, and Ferraris
3. What is an electric motor and how does it work?An electric motor turns electricity into spinning motion using magnets and electric current. The current flows through a wire inside a magnetic field, creating a force that makes the motor spin.
4. Why are electric motors better than gasoline engines?Electric motors use electricity instead of burning fuel, so they are cleaner and quieter. They also need less maintenance and can be very efficient.

Transducer: A device that converts one form of energy into another.
Torque: A twisting or turning force that causes rotation.
Commutator: A component in DC motors that reverses the direction of current to maintain rotation.
Induction Motor: An AC motor where the rotor's magnetic field is induced by the stator's rotating magnetic field.