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Electric Charges and Fields

  1. The electric field in a certain region is acting radially outward and is given by E = Aa. A charge contained in a sphere of radius 'a' centred at the origin of the field, will be given by​​
    1. A ε0 a2
    2. 4 πε0 Aa3
    3. ε0 Aa3
    4. 4 πε0 Aa2
Correct Option: B

Net flux emmited from a spherical surface of radius a according to Gauss’s theorem

φnet =
qin
ε0

or,​(Aa) (4πa2) =
qin
ε0

So, ​qin = 4πε0 A a3



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