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12th ICSE
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A closed surface has n electric dipoles located inside it. The net electric flux emerging through the surface is :

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Important Questions on Gauss' Theorem

EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 5
The nucleus of hydrogen atom is a sphere of radius 10-15 m. The electric field at the surface of the nucleus is:
 
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 6

Electric field intensity E at a point P (see figure) at a perpendicular distance r from an infinitely long linear charge X-X having linear charge density λ is given by :

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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 7
A closed surface in vacuum encloses charges - q and +3q. The total electric flux emerging out of the surface is :
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 1
What is the use of Gaussian surface?
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 2
A Gaussian surface is chosen to obtain an expression for the electric field at a point due to a given charge configuration. It is a closed surface. State one essential property of such a chosen Gaussian surface.
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 3
How do the expressions for electric fields just outside a sheet of charge and a charged conductor differ?
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12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 4
The unit of electrostatic field E is volt/metre. Obtain the unit of electric flux.
EASY
12th ICSE
IMPORTANT
NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 2 - Gauss' Theorem>QUESTIONS>Q 5
A sphere S1, encloses a charge q. There is a larger concentric sphere S2 with no additional charge between S1 and S2. Find the ratio of electric flux through S1 and S2.