Eddy current

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/eddy-current

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 governing principles?Faraday's Law of Induction and Lenz's Law
2. What is the discoverer?Léon Foucault (1851), building on Faraday's work
3. What are eddy currents?Eddy currents are tiny whirlpools of electricity that form inside a metal when a magnetic field changes, creating small electric loops.
4. How do eddy currents help stop moving trains?When a train passes over a magnetic track, eddy currents are created in the metal, and their magnetic field pushes back against the train, slowing it down without touching brakes.

Faraday's Law of Induction: States that a changing magnetic flux through a circuit induces an electromotive force (EMF).
Lenz's Law: Specifies that the direction of an induced current opposes the change in magnetic flux that produced it.
Electromagnetic Induction: The production of an electric current or voltage in a conductor by a changing magnetic field.
Joule Heating: The process where the passage of an electric current through a conductor causes electrical energy to be converted into heat.