The electric field in a certain region is acting radially outward and is given by A charge contained in a sphere of radius centered at the origin of the field will be given by:
1.
2.
3.
4.
1. | 2. | ||
3. | 4. |
What is the flux through a cube of side if a point charge of is placed at one of its corners?
1.
2.
3.
4.
1. | be reduced to half |
2. | remain the same |
3. | be doubled |
4. | increase four times |
Two positive ions, each carrying a charge , are separated by a distance . If is the force of repulsion between the ions, the number of electrons missing from each ion will be:
( is the charge on an electron)
1. | 2. | ||
3. | 4. |
A square surface of side (metre) in the plane of the paper is placed in a uniform electric field (volt/m) acting along the same plane at an angle θ with the horizontal side of the square as shown in the figure. The electric flux linked to the surface in the unit of V-m is:
1. | 2. | ||
3. | 4. |
The electric field at a distance from the centre of a charged conducting spherical shell of radius is . The electric field at a distance from the centre of the sphere is:
1.
2.
3.
4. zero