At a distance of 0.208 cm from the center of a charged conducting sphere with radius 0.100cm, the electric field is 485 n/c . what is the electric field 0.620 cm from the center of the sphere?

Solution:

we have given that the following:-

d=0.208cm

r=0,1cm

E=485N/C

we have to find at r=0.620cm

thus for the calculation of that we have to suppose the imaginary surface of sphere

Imaginary surfaces are spheres of radii 0.208cm and 0.620cm  

485x4π 0.198²=E'x4π 0.586²  

so,

E'.= 485x4π 0.198²/4π 0.586²

      =19.01394/0.34396

      = 55.37NC.

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