Electric Charges and Fields questions
340 published questions with worked solutions.
- The unit of electric field is NOT equivalent to
- When electric field intensity E at any point in the electric field is directed towards or away from the same fixed point, then...
- Gauss' law is true only if force due to a charge varies as
- The Gaussian surface needed for calculating the electric field due to a charge distribution is
- Electric intensity at a place due to a charge is a _________ quantity
- Gauss' law helps in
- The unit of charge density of a charged conductor is
- If charge q induced on outer surface of sphere of radius R, then intensity at point P at distance S from centre is
- Gauss’ law should be invalid if
- The S.I. unit of electric flux is
- Statement 1: Electric flux represents the number of electric lines passing normally through the given surface in the electric...
- The magnitude of an electric intensity at a point which is at a distance ‘r’ from the centre of a charged spherical conductor of...
- For a point situated at a distance 20 cm from the axis of a long cylindrical charged conductor, the electric intensity is 0.4...
- An infinite line charge produces a field of 4.5 10^4 N/C at a distance 2 m from it. The linear charge density is
- A point charge causes an electric flux of -200 N ,m^2/C to pass through spherical Gaussian surface of 10 cm radius centered on...
- A cylinder of radius 5 mm and surface charge density of 2 C/m^2 is surrounded by a medium of dielectric constant 6.28. The...
- A conducting sphere of radius 0.1 m has a uniform positive charge density of 1.8 C/m^2 on its surface. The electric field in V/m...
- A charge Q = 18 µC is placed at the centre of a cube of edge 55 cm. The electric flux through one of the faces of the cube is
- Cylinder is charged by 10 mC. Length of cylinder is 1 km and radius is 1 mm. Surface charge density of cylinder is
- The maximum charge that can be conveyed to a conducting sphere of diameter 20 cm (breakdown field of air =2 10^6 V ,m^ -1 ) is
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