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Question

The inward and outward electric flux for a closed surface in units of 2 N-m2 /C are respectively8 cross times 10 cubed text  and  end text 4 cross times 10 cubed Then the total charge inside the surface is [where epsilon subscript 0 equals permittivity constant]

  1. 4 cross times 10 cubed straight C
  2. negative 4 cross times 10 cubed straight C
  3. fraction numerator open parentheses negative 4 cross times 10 cubed close parentheses over denominator epsilon end fraction straight C
  4. negative 4 cross times 10 cubed epsilon subscript 0 straight C

The correct answer is: negative 4 cross times 10 cubed epsilon subscript 0 straight C

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