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love singh Grade:
        

An isolated conducting sphere whose radius R=1 metre  has charge q=1/ 9 nc ( 1 divide 9) . The energy density at the surface  of sphere is (in joule per metrecube)


(A) ε0/2               (B)ε0


(C)2ε0                (D)ε0/3


 

7 years ago

Answers : (2)

PARTH ARORA
19 Points
										

energy density is  given by 1/2 f silen not E^2  where E is the electric field at the surface.


 


E= q^2 /( 4 pief silen not r^2)


 


where r is the radius of the conductor


put values and obtain ans

7 years ago
Abantika Routray
24 Points
										
energy density formula =1/2epsilon*E^2                                                                                                                                           1/2*epsilon*(kq/r^2)^2                                                                                                                                                      1/2*epsilon(9*10^9*1/9*10^-9/1)^2
1/2*epsilon.1^2=epsion/2
 
 
 
 
                                    
5 months ago
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