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Two ideal solenoids of same dimensions. One is air cored with 600 turns while other is Aluminium is cored with 200 turns (relative permeabililty of Aluminium is 3), are connected in a circuit as shown in the figure. The switch S is closed at t=0. Find the ratio of potential difference across air-cored solenoid to that of Aluminium cored solenoid at any time t |
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Answer» `L_(1)=(mu_(@)N_(1)^(2)A)/1, L_(2)=(mu_(@)N_(2)^(2)Amu_(r))/1` SINCE `V=-L(dl)/(DT)`, So `(V_(1))/(V_(2))=(L_(1))/(L_(2))=((N_(1))/(N_(2)))^(2) 1/(mu_(r))=(600/200)^(2)xx1/3=3` |
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