Three charges +Q, q, +Q are placed respectively, at distance, 0, d//2 and d from the origin, on the x-axis. If the net force experienced by +Q placed at x=0, is zero, then value of q is :
Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to
Three charges Q+q and + q are placed at the vertices of a right -angle isosceles triangle as shown below. The net eletrostatic energy of the configuration is zero if the value of Q is :
Three charge q , Q and -4q are placed in a straight line , line of length L at points distant 0 ,L//2 and L respectively from one end. In order to make the net force on q zero, the charge Q must be equal to
A charged spherical conductor of radius R carries a charge Q. a point charge q is placed at an outside point at a distance x from the surface of the sphere. The force experienced by the point charge will be proportional to
A positive point charge q is fixed at origin. A dipole with a dipole momen vec(p) is placed along the x-axis for away from the orgin with vec(p) poiniting along positive x-axis . (i) If the kinetic energy of the diople when it reachers a distance d from the origin is ( qp)/( 4 pi epsi_(0) d^(n)) , then n is . (ii) If the force experienced by the charge q at this moment is (4qp)/(pi epsi_(0) d^(3)), hat(i) then x is.
Three charges Q_0 - q and q are placed at the vertices of an isosceles right angle triangle as in the future. The net electrostatic potential energy is zero if Q_0 is equal to
Three point charges Q_(1), Q_(2), Q_(3) in the order are placed equally spaced along a straight line. Q_(2) and Q_(3) are equal in magnitude but opposite in sign. If the net force on Q_(3) is zero. The value of Q_(1) is
Four point charge q, - q, 2Q and Q are placed in order at the corners A, B, C and D of a square. If the field at the midpoint of CD is zero then the value of q//Q is (5 sqrt5)/(x) . Find the value of x.
A charge Q is distributed over a line of length L Another point charge q is placed at a distance r from the centre of the line distribution.Then the force experienced by q is
A charge Q is distributed over a line of length L Another point charge q is placed at a distance r from the centre of the line distribution. Then the force experienced by q is
