Ohm

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

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 Ohm known for?Named after Georg Ohm for his foundational work on electrical resistance
2. What is the SI unit of electrical resistance?Ohm (Ω)
3. What is the definition basis?Derived from Ohm's Law (V=IR) and now precisely defined by fundamental constants
4. What is an Ohm and why is it important for electricity?An Ohm is the unit that measures how much a material resists electric current. It helps engineers design safe and efficient circuits.
5. How did the Ohm get its name?It is named after Georg Ohm, a scientist who discovered the relationship between voltage, current, and resistance in the 1820s.

Electrical Resistance: A material's inherent property to oppose the flow of electric current, measured in Ohms.
Ohm's Law: The fundamental relationship stating that voltage equals current multiplied by resistance (V=IR).
International System of Units (SI): The modern metric system of measurement used worldwide in science and commerce.
Electrical Impedance: The total opposition to alternating current flow, including resistance and reactance, measured in Ohms.