COULOMB'S LAW

IIT JEE 2015 Coaching › Electricity and magnetism questions › COULOMB'S LAW

two point charges +4q and+q are placed at a distance L apart. a third charged particle is so placed that all the three charges are in equilibrium. find the location, magnitude and nature of third charge.

#Physics #Electricity and magnetism

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2 Answers

37

Karan Matalia ·2014-04-14 05:35:56

Let the third charge be Q.
It is located at a distance 4L/5 from 4q.
Its magnitude is =16q/25
It is -ve in nature.

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Karan Matalia I'm very sorry the answer is wrong.i forgot to take root of 4
Upvote·0· Reply ·2014-04-14 07:35:05
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37

Karan Matalia ·2014-04-14 07:37:53

It is located at a distance 2L/3 from 4q
It's magnitude is 4q/9.
It is -ve in nature.

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω