Electrostatics Question 673

Question: The electric flux from a cube of edge $ l $ is$ \phi $ . If an edge of the cube is made $ 2l $ and the charge enclosed is halved, its value will be

Options:

A) $ 4\phi $

B) $ 2\phi $

C) $ \phi /2 $

D) $ \phi $

Show Answer

Answer:

Correct Answer: C

Solution:

[c] $ \phi =\frac{q}{{\varepsilon _{0}}} $ (independent of dimensions) New flux, $ \phi ‘=\frac{\phi }{2} $



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