Point charges 30 nC, - 20 nC, and 10 nC are located at (-1, 0, 2), (0, 0, 0) and (1, 5, -1) respectively. The total flux leaving a cube of side 6 m centered at the origin is
Points inside the cube:
(-1, 0, 2) and (0, 0, 0).
qin=30−20=10 nC,q_{in}=30-20=10~nC,qin=30−20=10 nC,
Φin=qinϵ0=10−98.85⋅10−12=113 Wb.\Phi_{in}=\frac{q_{in}}{\epsilon _0}=\frac{10^{-9}}{8.85\cdot 10^{-12}}=113~Wb.Φin=ϵ0qin=8.85⋅10−1210−9=113 Wb.
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