kurukshetra magnetism 2

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infinite number of straight wires each carrying current i are equally placed as shown in the fig. adjacent wires have curent in opposite direction. net magnetic field at point p is

a. Î¼i ln24Ï€√3a k

b. Î¼i ln44Ï€√3a k

c. Î¼i ln24Ï€√3a [-k]

d.0

#Physics #Electricity and magnetism #Magnetism

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7 Answers

466

Himanshu Giria ·2014-08-20 22:13:28

d.0

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146

Amartya Kumar Mistry ·2014-08-20 22:22:31

answer is a

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146

Amartya Kumar Mistry ·2014-08-20 22:40:28

oops silly mistake it should be c.

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1161

Akash Anand ·2014-08-20 23:00:59

In this and another question of infinite series, all you would have to know one expansion:
ln(1+x)=x-x²2+x³3-x⁴4.... and so on.

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146

Amartya Kumar Mistry ·2014-08-20 23:20:59

SIR MY ANSWER IS CORRECT OR NOT?

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Akash Anand Correct answer is B
Upvote·0· Reply ·2014-08-21 00:40:13
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187

Swastik Haldar ·2014-08-25 12:05:35

sir can you give some more hints ? I can not proceed with this.

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1161

Akash Anand ·2014-09-02 00:47:43

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Akash Anand Still have any doubt???
Upvote·0· Reply ·2014-09-02 00:48:10
Swastik Haldar thank you sir!!
Upvote·0· Reply ·2014-09-03 19:27:59
Harsh Pratap Singh Chauhan @Akash Thanqss sir ji
Upvote·0· Reply ·2017-01-30 01:49:30
Akhil Jaywant Why B2 will be into the plane
Upvote·0· Reply ·2017-08-12 11:07:29
Akhil Jaywant Ok ok got it is written
Upvote·0· Reply ·2017-08-12 11:08:17
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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