plot the variation......

JEE Mains Guidance › Electricity and magnetism questions › plot the variation......

If the internal resistance of a cell is propotional to current drawn from cell.Then plot the variation of terminal potential difference of cell with current drawn from source.

#Physics #Electricity and magnetism

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Lokesh Verma ·2009-01-22 03:17:26

r=kI

E=I(r) + IR

E=I²r+IR

I²r+IR-E=0

I= -R+√R²+4Er

This i guess is more than the hint? ;)

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eureka123 ·2009-01-22 03:22:01

is this correct???? E=I²r+IR

i think it should be E=I²k+IR

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voldy ·2009-01-22 03:22:43

@ Nishant.we want terminal p.d , so can't we just have the internal R as the only r . do we need another external one? I'm only asking. dunno whether it's very primitive . sry .

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eureka123 ·2009-01-22 03:28:42

reply sir.........

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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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plot the variation......

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