Q.
A point charge of +12 μC is at a distance 6 cm vertically above the centre of a square of side 12 cm as shown in fig. The magnitude of the electric flux through the square will be ……..×103 Nm2/C :
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answer is 226.
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Detailed Solution
Imagine, +q charge to be at center of an imaginary cube of side 12cm.Flux passing through cube = ϕ=qε0By symmetry, Flux passing through each face of cube = ϕ'=q6ε0=12×10−66×8.85×10−12=225.98×103 SI units
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