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Write down the expression for the capacitance of a spherical capacitor ?​

Answer»

tion:The radius of two concentric sphere be r 1 and r 2 respectively,A charges −Q is introduced on the inner sphere and hence CHARGE Q will induced on OUTER sphere.E=0 for rELECTROSTATIC shielding]E=0 for r>r 1 [earthed]ELECTRIC field exists in between and is DIRECTED radially outward.Electrostatic potential of inner sphere of radius r 2 V= 4πϵ o 1 ( r 2 Q − r 1 Q )=V= 4πϵ o Q ( r 2 1 − r 1 1 )Electrostatic potential of outer sphere 4=0C is the capacitance of spherical CapacitorC= VQ 4πϵ o Q [ r 2 1 − r 1 1 ]Q C= r 1 −r 2 4πϵ o r 1 r 2 solution



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