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vish0001 (493)

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please confirm he answer for this question
i am getting the answer as 4.43 X 10 to the power - 11
 
two square plates of side 1 m are kept 0.01 m apart like a parallel plate capacitor in air such that one of their edges is perpendicular to the oil surface in a tank filled with an insulating oil. the plates are connected to a battery of emf 500 V . the plates are then lowerd at the rate of 0.001 m per second. calculate the current drawn from the battery during the process
dielcetric constant of oil =11 and value of absilon not =  8.85 X 10 to the power (-12)



    
calculas (51)

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vish0001 (493)

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anybody confirm this !!!!??????! this answer is right or not ?



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rebel (82)

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~~~~~~~~~~~~~~~~~~~hey ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~ Q = CV~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~ find expression for capacitance!~~~~~~~~~~~~~~~
~~~~~~~~~~~~~ at any instant ~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~ differentiate Q = CV~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~ find i ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~ answer sorry ~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~ have to find out ~~~~~~~~~~~~~~~
~~~~~~~~~~~~~ finally kill it ~~~~~~~~~~~~~~~~~~~~~~~

everything's fair in love , war and IIT JEE




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krishna.gopal (2149)

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If V is voltage supplied K dilectric constant v velocity of capacitor and d seperation between plates than
i = V(K-1)epsilon_not*v/d
=500*10*8.85*10^-12*0.001/0.01 = 4.43*10^-11
You have got right answer

Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
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