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प्रश्न
A point charge of 2.0 μC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the surface?
संख्यात्मक
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उत्तर
Φ = `q/ε_0`
= `(2 xx 10^-6)/(8.85 xx 10^-12)`
= 0.23 × 106
or Φ = 2.3 × 105 N m2 C-1
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