Advertisements
Advertisements
प्रश्न
In a region of constant potential ______.
- the electric field is uniform
- the electric field is zero
- there can be no charge inside the region
- the electric field shall necessarily change if a charge is placed outside the region
विकल्प
b and c
a and c
b and d
c and d
उत्तर
b and c
Explanation:
We know, the electric field intensity E and electric potential V are dV related as E = – dV/dr
or we can write |E| = ΔV/Δr
The electric field intensity E and electric potential V are related as E = 0 and for V = constant, dV/dr = 0 this imply that electric field intensity E = 0.
If some charge is present inside the region then electric field cannot be zero at that region, for this V = constant is not valid.
APPEARS IN
संबंधित प्रश्न
A small test charge is released at rest at a point in an electrostatic field configuration. Will it travel along the field line passing through that point?
What is the work done by the field of a nucleus in a complete circular orbit of the electron? What if the orbit is elliptical?
Obtain an expression for an intensity of electric field at a point at the end of position, i.e., the axial position of an electric dipole.
x
Three point charges +q each are kept at the vertices of an equilateral triangle of side 'l'. Determine the magnitude and sign of the charge to be kept at its centroid so that the charges at the vertices remain in equilibrium.
A body moves from point A to B under the action of a force, varying in magnitude as shown in the figure. Force is expressed in newton and displacement in meter. What is the total work done?
A work of 100 joule is performed in carrying a charge of 5 coulomb form infinity to a particular. point in an' electrostatic field. The potential of this point is:-
Potential energy of two equal negative point charges 2µc each held lm apart in air is:-
In bringing one electron towards another electrons, the electrostatic potential energy of the system will.
