Question

The total flux associated with given cube will be-
where ${}^{\prime }{a}^{\prime }$ is side of cube : $(\frac{1}{{ϵ}_0}=4\pi \times 9\times {10}^{9}SIunit)$

• A. $162\pi \times {10}^{-3}N{m}^2/C$
• B. $162\pi \times {10}^{3}N{m}^2/C$
• C. $162\pi \times {10}^{-6}N{m}^2/C$
• D. $162\pi \times {10}^{6}N{m}^2/C$

Answer 1

The correct option is B $162\pi \times {10}^{3}N{m}^2/C$

Total flux associated with given cube $\frac{1}{{ϵ}_0}=4\pi \times 9\times {10}^{9}SI$

$(q_1+q_2+q_3+q_4)\pi \times {10}^{3}N{m}^2/C$

$=(4\times 1\times 4\times 3)\times \pi \times {10}^3\times {10}^{-6}N{m}^2/C$

$=162\times \pi \times {10}^{3}N{m}^2/C$