ElectrostaticsHard
Question
Charges Q1 and Q2 lies inside and outside respectively of a closed surface S. Let E be the field at any point on S and be the flux of E over S.
Options
A.If Q1 changes, both E and φ will change.
B.If Q2 changes, E will change but φ will not change.
C.If Q1 = 0 and Q2 ≠ 0 then E ≠ 0 but φ = 0
D.If Q1 ≠ 0 and Q2 = 0 then E = 0 but φ = 0
Solution
Electric flux depends on the total charge enclosed by the closed surface S. Hence flux is related with charge Q1. Electric field at a point is the vector sum of the all electric field intensities due to all charges.
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