Halliday Resnick Krane Physics Vol 2 – Chapter 25 Problem 4 | Electric Charge & Coulomb’s Law

Coulomb’s Law Problem #4 | Step by Step Solution | Electrostatics | Physics
In this video, we solve Problem #4 from Coulomb’s Law (Electrostatics) from Physics Chapter 25. Two identical charged balls are suspended with strings and repel each other. Using the concepts of electric force, tension, and equilibrium, we derive the required relation and calculate the charge step by step.
This video is perfect for FSc / Class 12 Physics students who want to clearly understand Coulomb’s Law numericals.
✨ In this video you will learn:
• Concept of Coulomb’s Law
• Forces acting on a charged suspended ball
• Relationship between electric force and tension
• Small angle approximation in electrostatics
• Step-by-step numerical problem solving
📊 Given Data in the Problem:
• Length of string L=122" " cm
• Mass of each ball m=11.2" " g
• Distance between balls x=4.70" " cm
🎯 Goal:
Find the value of charge q on each ball.
This lecture will help you understand the application of Electrostatics concepts in numerical problems and exam preparation.
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📚 Chapter: Electrostatics
📖 Book: HRK Physics Volume 2
🎓 Level: FSc / Intermediate Physics
Playlist: Halliday Resnick Krane Physics Vol 2 | Chapter 25 – Electric Charge & Coulomb’s Law
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