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1. Electric Charges and Fields
normal
એક વિદ્યુતભાર $Q$ ને ધનના કેન્દ્ર આગળ મૂકેલો છે. ધનની બધી જ છ બાજુઓ માંથી પસાર થતું વિદ્યુતફલક્સ .......... છે.
A
$\frac{Q}{{6\,\,{ \in _0}}}$
B
$\frac{Q}{{8\,\,{ \in _0}}}$
C
$\frac{Q}{{{ \in _0}}}$
D
$\frac{Q}{{2\,\,{ \in _0}}}$
Solution
Flux through the cube $=\phi=\frac{q}{\epsilon_0}$
Since, charge is placed symmetrically and is equivalent to all 6 faces, hence flux through all 6 faces will be equal and the sum of flux through all six face equals the total flux.
Hence, flux through each face $=\frac{q}{6 \epsilon_0}$
Standard 12
Physics
