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# CBSE Class 12-science Answered

Charge of 2C is placed at the centre of a cube of volume 8 cm^3. What is the electric flux passing through one face?

Asked by hitanshu04 | 27 May, 2021, 07:33: PM
Expert Answer
Volume og given cube is 8 cm3 , hence side length of cube is 2 cm.

By Gauss theorem , electric flux over the closed surface is enclosed charge within the closed surface divided by permittivity of the medium.

If the medium inside the cube is air or vaccum , then total Electric flux φ over the closed surface of cube  is given by

φ = Q / εo  = 2 / ( 8.854 × 10-12 ) = 2.259 × 1011 N C-1 m2

Electric flux passing through one face = ( 2.259 × 1011 ) / 6  = 3.765 × 1010 N C-1 m2

Answered by Thiyagarajan K | 27 May, 2021, 08:59: PM

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