Question

A cubical box contains charge $+Q$ at its centre. The total magnetic flux emerging from the box is :

• A. $\frac{Q}{{\epsilon }_0}$
• B. $\frac{Q}{6{\epsilon }_0}$
• C. $\frac{Q}{4{\epsilon }_0}$
• D. ${\epsilon }_{0}Q$

Answer 1

Answer: (A)

According to Gausss theorem, total electric flux
$\varphi =\frac{Q}{{\epsilon }_0}$