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A hollow insulated conduction sphere is given a positive charge of 10 m C. What will be the electric field at the centre of the sphere if its radius is 2 metres? (a) Zero (b) 5 u Cm -2 (c) 20 u Cm -2 (d) 8 u Cm -2



A hollow insulated conduction sphere is given a positive charge of 10 mC. What will be the electric field at the centre of the sphere if its radius is 2 metres?


        (a)    Zero


        (b)    5 uCm-2


        (c)    20 uCm-2


        (d)    8 uCm-2


Grade:11

2 Answers

Amit Saxena
35 Points
7 years ago

(a)

Charge resides on the outer surface of a conducting hollow sphere of radius R. We consider a spherical surface of radius r < R. By Gauss''s theorem,

 

 

 

 

i.e., electric field inside a hollow sphere is zero.

Maham Hanif
20 Points
2 years ago
Field inside a conducting sphere is zero.
Formula of gausses law,
Φ=q/∈0
put q=0, final ans will be zero.
Hope it helps!

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