Advertisements
Advertisements
Question
The electric potential on the axis of an electric dipole at a distance ‘r from it’s centre is V. Then the potential at a point at the same distance on its equatorial line will be ______.
Options
2V
-V
V/2
Zero
Advertisements
Solution
The electric potential on the axis of an electric dipole at a distance ‘r from it’s centre is V. Then the potential at a point at the same distance on its equatorial line will be zero.
Explanation:
Potential on the equatorial line of dipole is always zero.
APPEARS IN
RELATED QUESTIONS
The particle P shown in figure has a mass of 10 mg and a charge of −0⋅01 µC. Each plate has a surface area 100 cm2 on one side. What potential difference V should be applied to the combination to hold the particle P in equilibrium?
If a positive charge moves opposite to the direction of the electric field, the field does _______ work on charge and potential energy ________.
It becomes possible to define potential at a point in an electric field because electric field ______.
A cube of metal is given a positive charge Q. For this system, which of the following statements is true?
From a point charge, there is a fixed point A. At A, there is an electric field of 500 V/m and potential difference of 3000 V. Distance between point charge and A will be ______.
-
The metal plate divides the capacitor into two capacitors connected in parallel to each other.
-
The metal plate divides the capacitors into two capacitors connected in series with each other.
-
The metal plate is equivalent to a dielectric of zero dielectric constant.
A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will ______.
An electric dipole of moment `vec"p"` is placed in a uniform electric field `vec"E"`. Then ______.
- the torque on the dipole is `vec"p" xx vex"E"`
- the potential energy of the system is `vec"p" * vec"E"`
- the resultant force on the dipole is zero.
Choose the correct option.
The force acting on a particle in one dimension is F = ax - 2xβ3. The corresponding potential energy V(x), assuming V(0) = 0 is given by ______.
If a conductor has a potential V ≠ 0 and there are no charges anywhere else outside, then ______.
- there must be charges on the surface or inside itself.
- there cannot be any charge in the body of the conductor.
- there must be charges only on the surface.
- there must be charges inside the surface.
