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A solenoid has 50 turns and radius 2 cm, diameter of wire is 2x 10^(-4) m, current through it when it is joined with battery of 10V is ... Resistivity of material.2*10^-6 Ωm. |
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Answer» I = `(V)/(R)` `THEREFORE I = (VA)/(rho l)` `therefore I =(V xx pi r^(2))/(rho xx 2 pi RN) "" [ because A = pi r^(2)] ` `therefore I = (10 xx (10^(-4) )^(2))/(4.4 xx 10^(-8) xx 2 xx 2 xx 10^(-2) xx 50) = (1)/(0.88)` `thereforeI = 1.136 `A `therefore I = 1.14A ` |
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