Electric Charges and Fields - Result Question 36
36. What is the flux through a cube of side ’ $a$ ’ if a point charge of $q$ is at one of its corner : [2012]
(a) $\frac{2 q}{e_0}$
(b) $\frac{q}{8 e_0}$
(c) $\frac{q}{e_0}$
(d) $\frac{q}{2 e_0}$
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Answer:
Correct Answer: 36. (b)
Solution:
- (b) Eight identical cubes are required to arrange so that this charge is at centre of the cube formed so flux.
$f=\frac{q}{8 e_0}$