Advertisements
Advertisements
प्रश्न
Consider two identical point charges located at points (0, 0) and (a, 0).
Is there a point on the line joining them at which the electric potential is zero?
उत्तर
Potential can never be zero, not ever. Given that it is a scalar amount and added everywhere. It is therefore never zero.
APPEARS IN
संबंधित प्रश्न
A charge is distributed uniformly over a ring of radius 'a'. Obtain an expression for the electric intensity E at a point on the axis of the ring. Hence, show that for points at large distance from the ring, it behaves like a point charge.
What is the function of uniform radial field and how is it produced?
The bob of a simple pendulum has a mass of 40 g and a positive charge of 4.0 × 10−6 C. It makes 20 oscillations in 45 s. A vertical electric field pointing upward and of magnitude 2.5 × 104 NC−1 is switched on. How much time will it now take to complete 20 oscillations?
A particle of charge q and mass m moves rectilinearly under the action of electric field E = A – Bx, where A and B are positive constants and x is distance from the point where particle was initially at rest then the distance traveled by the particle before coming to rest and acceleration of particle at that moment are respectively.
A charge Q is placed at the centre of the line joining two point charges +q and +q as shown in the figure. The ratio of charges Q and q is ______.
Electric lines of force about negative point charge are ______
Two equal point charges of the same sign are fixed on the y-axis, on either side of the origin equidistant from it, with the distance between them d. A third charge moves along the x-axis. The distance of the third charge from either of the two fixed charges when force on the third charge is maximum will be ______ cm.
[d = 10 cm]
An isolated point charge particle produces an electric field `vecE` at a point 3 m away from it. The distance of the point at which the field is `vecE/4` will be ______.
In case of an infinite line charge, how does intensity of electric field at a point change, if at all, when.
- charge on it is doubled?
- distance of the point is halved?