8.6 - Resistance
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the unit of resistance?
💡 Hint: It's a term related to electric circuits.
State the formula for calculating resistance.
💡 Hint: It involves voltage and current.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for resistance?
💡 Hint: It involves voltage and current.
True or False: Increasing temperature increases the resistance of metals.
💡 Hint: Think about how heat affects materials.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
A cylindrical wire of length 2 m and a radius of 0.5 mm has a resistivity of 1.68 × 10^-8 Ω·m. Calculate its resistance.
💡 Hint: Use the resistivity formula involving length and cross-sectional area.
If three resistors with values 4Ω, 6Ω, and 12Ω are connected in series, what is the total resistance?
💡 Hint: For series, just add the resistances together.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.