Solving Chapter 1 Problems for Grade 11: Static Electricity ⚡

We’ve reached the part you’re all about 😎: solving problems! Here, we’re going to tackle all 32 end-of-chapter problems from Chapter 1 of the 11th-grade Physics textbook together — covering everything from charge and electroscope to capacitors and dielectrics. But not in that boring “Given: … Find: …” style. This time, I’m going to sit right next to you like a friendly teacher, and we’ll move forward step by step. Let’s go 👇

How does this article work? 🎮

In the widget below, each problem has three buttons:

• 💡 Hint — If you’re stuck and don’t know where to start, this is a mental nudge (not the answer!).
• ▶️ Start Solving / Next Step — This is the main button. Each time you click it, one step of the solution with a full explanation is revealed. At the end, it gives you the final answer.
• 🔍 Check My Answer — If you’ve solved the problem yourself and just want to verify your answer, click this. Enter your number, and it will be checked with a 5% tolerance.

💡 Important Note: Some problems are similar to or continue from others. If you see a 🔗 box above referencing a previous problem, I recommend reviewing that one first — this way, your learning remains step-by-step.

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32 Problems, 7 Topics 🗺️

These problems cover all the concepts of the chapter — from basic concepts to complex capacitor calculations:

• Charge, Conservation, Quantization (Problems 1-5) — Electroscope, charge transfer, electron counting
• Coulomb’s Law (Problems 6-10) — Force between charges, superposition principle, equilibrium
• Electric Field (Problems 11-16) — $vec{E}$, force on a particle, field diagrams
• Field Lines and Conductors (Problems 17-20) — Flux, electrostatic shielding, charge distribution
• Potential and Potential Energy (Problems 21-25) — $V$, $U_E$, work done by the field
• Capacitor (Problems 26-30) — Capacitance, parallel-plate capacitor, dielectric effect
• Energy Stored in a Capacitor (Problems 31-32) — $U = frac{1}{2}CV^2$

A Recommendation Before You Start 📝

First, try it yourself. Only then look at the hint. Only then reveal the solution steps. Learning physics doesn’t happen by “watching the solution” — it happens through struggling and getting stuck. When you get stuck, your brain becomes ready to accept the solution. This is a scientific fact in neuroscience (which is a whole other chapter 😄).

Good luck ✊