Electric Charges and Fields questions
340 published questions with worked solutions.
- Two point charges +q_1 and +q_2 repel each other with a force of 100 N. +q_1 is increased by 10% and +q_2 is decreased by 10%. If...
- Two point charges +10q and –4q are located at x = 0 and x = L respectively. What is the location of a point on the x-axis from...
- If the radius of the spherical Gaussian surface is increased then the electric flux due to a point charge enclosed by the surface
- Three charges q, Q, and +4q are placed in a straight line of length d at points at distance 0, d 3 , d respectively. In order to...
- An electron of 'm' and charge 'q' is accelerated from rest in a uniform electric field of strength 'E'. The velocity acquired by...
- A sphere 'A' of radius 'R' has a charge 'Q' on it. The field at point B outside the sphere is 'E'. Now another sphere of radius...
- Charges 3Q, q and Q are placed along x – axis at positions x = 0, x = 3 and x = respectively. When the force on charge Q is zero,...
- Three equal charges 'q_1', 'q_2' and 'q_3' are placed on the three corners of a square of side 'a'. If the force between q_1 and...
- Two point charges +q_1 and +q_2 repel each other with a force of 100N. Keeping the distance between them unchanged, if q_1 is...
- A charge 17.7 10^ -4 C is distributed uniformly over a large sheet of area of 200 m ^2. The electric field intensity at a...
- The electric field intensity of the surface of a solid charged sphere of radius 'r' and volume charge density ' ' is ( _0 =...
- A uniformly charged semicircular arc of radius 'r' has linear charge density ' '. The electric field at its center is ( _0 =...
- A conducting sphere of radius 0.1 has uniform charge density 1.8 C m^2 on its surface. The electric field in free space at radial...
- A point charge 'Q' is placed at the centre of the line joining two equal charges '+q' and '+q'. The value of Q when the system is...
- The number of lines of force originating from a point charge of 2 x 8.85 x 10^ -9 C in a medium of dielectric constant 10 is ( _0...
- Consider a long uniformly charged cylinder having constant volume charge destiny ' ' and radius 'R'. A Gaussian surface is in the...
- The electric field in the region is E = a i +b j where 'a' and 'b' are constants. The net electric flux passing through a square...
- Two point charges +e and +4e are kept at a distance 'd' units apart. Third point charge +q is placed between the two charges at a...
- A uniformly charged conducting sphere of diameter 3.5 cm has a surface charge density of 20 C m ^ -2 . The total electric flux...
- Two point charges placed in air separated by distance 'R' exert a force 'F' on each other. Now the space between those charges is...
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