Ohm's law

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/ohm-s-law

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. Who discovered Ohm's law?By Georg Simon Ohm in the 1820s, published in 1827
2. What is the discoverer's nationality?German
3. What is the unit of resistance?The ohm (Ω), named in honor of Georg Simon Ohm
4. Why does electricity make some things hot?When electricity passes through a resistor, the resistance turns electrical energy into heat. This is called Joule heating and is why wires and devices can warm up.
5. How does Ohm's Law help engineers?Engineers use V = I × R to design and troubleshoot circuits, calculate voltage drops, and ensure power delivery is safe and efficient.

Voltage (V): The electric potential difference between two points, driving electric current, measured in volts.
Current (I): The flow of electric charge through a conductor, measured in amperes (A).
Resistance (R): The opposition to the flow of electric current within a conductor, measured in ohms (Ω).
Ohmic Material: A material whose resistance remains constant regardless of the applied voltage or current.