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Question

Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0×103Nm2/C. What is the net charge inside the box?
  1. 0.05μC
  2. 0.06μC
  3. 0.07μC
  4. 0.08μC

A
0.05μC
B
0.06μC
C
0.07μC
D
0.08μC
Solution
Verified by Toppr

Apply Gauss's law
ϕ=qϵ0q=0.07μC

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