1the answer should be b.
Multiple answer correct:
There exist an electric field in space given by the relation
E=E"x^n i
Consider an imaginary cube of side l , centred at (l/2,l/2,l/2) whose faces are parallel to xy, yz and zx planes. Select the correct alternative(s).
(a) If n=0, then charge enclosed by the cube is zero
(b) If n=1 then the cube encloses some positive charge
(c) If n= -1 then the cube encloses some negative charge
(d) If n=2 then the charge enclosed by the cube is zero.
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3 Answers
1there are two more ans to this , plzz explian how b is correct
1okay, yes its multiple choices
a will be correct also... luk when n=0 E=E'' i..
which is constt.. now the cube is much above the x axis so charge enclosed will be zero
b is correct as at n=1 u get E= E'' x i which explains that the charge enclosed will be positive.
i m not getting which is the third correct option.. lemme think!!!