doubt4

IIT JEE 2015 Sample Questions › Electricity and magnetism questions › doubt4

consider a long,straight wire of cross section a carrying current i .let there be n free electrons per unit volume .an observer places himself on a trolley moving in direction opposite to current with a speedv=i/nAe n separated frm wire by a distance r.the magnetic field seen by the abserver is very nearly?

#Physics #Electricity and magnetism

UP 0 DOWN 0 0 5
Post on FacebookPost anonymously?

5 Answers

1

metal ·2009-05-01 07:58:22

Is the answer zero?

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

vector ·2009-05-01 07:59:53

sry it s nt correct

UP 0 DOWN 0
Post on FacebookPost anonymously?

13

deepanshu001 agarwal ·2009-05-01 08:05:36

i dnt understand y is it nt 0...

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

vector ·2009-05-01 08:08:05

if it wud ve been o to yeh mera doubt kyon hota . the ans is Î¼i/2Ï€r

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

vector ·2009-05-01 10:42:32

cud sum1 explain it plzz

UP 0 DOWN 0
Post on FacebookPost anonymously?

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