Heat produced and lost in a Wire

JEE Mains 2015 Tutorials › Electricity and magnetism questions › Heat produced and lost in a Wire

A steady current I flows through a wire of resistivity Ï, length L and radius r. The current produces heat in the wire. The rate of heat loss in the wire is proportional to its surface area. The steady temperature of the wire is independent of

A. L B. r C. I D. Ï

#Physics #Electricity and magnetism

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Astha Gupta ·2013-10-24 05:04:36

i think its c)I...

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Soumyadeep Basu Actually, the answer is A) L.
Upvote·0· Reply ·2013-10-24 07:57:42
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Astha Gupta ·2013-10-24 09:47:36

oh..i just guessed..can u xpalin how...???...plzz...

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Astha Gupta i think..i can understand the logic..but still wanted to knw a betr explanation
Upvote·0· Reply ·2013-10-24 09:49:25
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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

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Heat produced and lost in a Wire

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