InterviewSolution
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InterviewSolution
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Show that the magnetic field B at a point in between the plates of a parallel-plate capacitor charging is (in_0mu_0r)/2 (dE)/(dt) (symbols having usual meanings). |
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Answer» Solution :Let `I_D` be the displacement current in the region between TWO plates of PARALLEL plate CAPACITOR, Fig. The magnetic field induction at a point in a region between two plates of capacitor at `abotr` distance r fromthe axis of plate is `B=(mu_0)/(4PI) (2I_D)/r=(mu_0)/(2pir) I_D=(mu_0)/(2pir)xxin_0 (d phi_E)/(dt)[ :' I_D=in_0 (dphi_E)/(dt)]` `=(mu_0in_0)/(2pir) d/(dt) (Epir^2)=(mu_0in_0)/(2pir) pir^2 (dE)/(dt) =(mu_0in_0 r)/2 (dE)/(dt)( :' phi_E=Epir^2)` 
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