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10 question-answer on electric flux | Learn Physics

10 question-answer on electric flux 1.        A cylinder of radius R and length l is placed in a uniform electric field E parallel to the axis of the cylinder. The total flux over the curved surface of the cylinder is: (a)     Zero (b)    πR 2 E (c)     2 πR 2 E (d)    E/ πR 2 Ans: (a) 2.        Electric flux at a point in an electric field is: (a)     Positive (b)    Negative (c)     Zero (d)    None of these Ans: (c) 3.        Electric flux over a surface in an electric field may be (a)     Positive (b)    Negative (c)     Zero (d)    Positive, negative, zero Ans: (d) 4.        If a unit charge is taken from one point to another over an equipotential   surface, then (a)  ...