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The electric field in a certain region o...

The electric field in a certain region of space is `(5 hat(i) + 4 hat(j) - hat(k)) xx 10^(5) N//C`. Calculate electric flux due to this field over an area of `(2 hat(i) - hat(j)) xx 10^(-2) m^(2)`.

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`phi=vec(E).vec(S)=[5xx2+4xx(-1)-4xx0]xx10^(5)xx10^(-2)Nm^(2)//C`
`=6xx10^(3)Nm^(2)//C`
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