Ohm: Definition & Formula


Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Which of the following statements is true about the ohm as a unit?

Create Your Account To Take This Quiz

As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Try it risk-free
Try it risk-free for 30 days. Cancel anytime
Already registered? Log in here for access

1. A circuit contains a voltage source of 3V and an unknown resistance. The current is known to be 300 mA. What is the resistance (in ohms)?

2. A 24-watt automobile headlight is powered by the car's 12V system. What is the internal resistance of the bulb (in ohms)?

Create your account to access this entire worksheet
A Premium account gives you access to all lesson, practice exams, quizzes & worksheets
Access to all video lessons
Quizzes, practice exams & worksheets
Certificate of Completion
Access to instructors
Create an account to get started Create Account

About This Quiz & Worksheet

This quiz and attached worksheet will help to gauge your understanding of ohm's and calculating resistance and their place in science and mathematics. Topics you will need to grasp in order to pass the quiz include ohm's law and using resistivity.

Quiz & Worksheet Goals

Use these assessment tools to assess your knowledge of:

  • Defining ohm's as a unit
  • Calculating resistance
  • Calculating internal resistance
  • Identifying ohm's

Skills Practiced

This worksheet and quiz let you practice the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related ohm's and calculating resistance lesson
  • Critical thinking - apply relevant concepts to examine information about ohm's and calculating resistance in a different light
  • Problem solving - use acquired knowledge to solve ohm's and calculating resistance practice problems
  • Knowledge application - use your knowledge to answer questions about ohm's and calculating resistance

Additional Learning

To learn more about ohm's and calculating resistance, review the corresponding lesson, Ohm: Definition & Formula, which covers the following topics:

  • Defining current, voltage, and resistance and applying their formulaic substance
  • Understanding electrical quantities in a circuit
  • Understanding resistance in a circuit
  • Identifying wattage
  • Identifying other formulas for calculating ohm's