A ball with charge -50 e is placed at the centre of a hollow spherical shell which has a net charge of -50e. what is the charge on..
Two point charges placed at a certain distance r in air exert a force F on each other. Then the distance r at which these charges ..
Four metal conductors having different shapes 1. A sphere 2. Cylindrical 3. pear 4. Lightning conductor are mounted on insulating ..
2 pith balls carrying equal charges are suspended from a common point by strings of equal length. With given condition, the equili..
Two identical conducting spheres carrying different charges attract each other with a force F when placed in an air medium at a di..
two equally charged, identical metal spheres A and B repel each other with a force F The spheres are kept fixed with a distance r ..
Two small Spheres of mass M1 and M2 are suspended by weightless insulating thread of lengths L1 and L2. The spheres carry charges ..
Two charges are at a distance d apart. If a copper plate (Conducting medium) of thickness d/2 is placed between them, the effectiv..
Two identical spheres carrying charges -9muC and 5muC respectively are kept in contact and then separated from each other. point o..
Identify the wrong statement in the following. Coulumbs law correctly describe the electric force that
which of the following will represent coulumbs law
The top of the atmosphere is at about 400kV with respect to the surface of earth, corresponding to an electric field that decrease..
2 fixed charges A & B are separated by a distance of 6m. C is a mid point of line joining A & B. A charge Q is shot perpendicular ..
A parallel plate capacitor is made of 2 circular plates seperated by a distance of 5 mm and with a dielectric between them. With g..
A soap bubble is given a negative charge, then its radius, then its radius
A solid sphere os radius R & given volume charge density is enclosed by a hollow sphere of Radius R2. With given conditions, the ..
A comb run through ones dry hair, attracts small bits of paper. This is due to
A charge Q is placed at each of the opposite corners of a square. A charge q is placed at each of the other 2 corners. With follow..
2 spheres carrying charges are seperated by a distance d, experiences a force of repulsion F. When a charge -3 uC is given to both..
Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between ..
two identical charged spheres suspended from a common point by two massless strings of lengths L, are initially at a distance d (d..
2 spheres having same radius and mass are suspended by two strings of equal length from the same point, in such a way that their s..
Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the n..
Energy associated with a moving charge is due to a
when a body is earth connected, electrons from the earth flow into the body. This means the body is
Two electrons are separated by a distance of 1A. what is the coulomb force between them
A body has -80 micro coulomb of charge. Number of additional electrons in it will be
Two spherical conductors B and C having equal radii and carrying equal charges in them repel each other with a force F when kept a..
Two copper balls, each weighting 10g are kept in air 10cm apart. If one electron from every 10 power 6 atoms is transferred from o..
Equal charges q are placed at the four corners A, B, C, D of square of length a. The magnitude of the force on the charge at B wil..
A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius radius b and oute..
Two particle of equal mass m and charge q are placed at a distance of 16 cm. they do not experience any force. the value of q/m is
Five balls numbered 1 to 5 are suspended using separate thteads. pairs (1, 2), (2, 4) and (4, 1) show electrostatic attraction, wh..
The law governing the force between the electric charges is called
The charge Q is projected into a uniform electric field E, work done when it moves a distance Y is
Three charges are placed at the vertices of an equilateral triangle of side a as shown in the following figure. the force experien..
One of the following is not a property of field lines
One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of A is given e..
The surface charge density of the earth is about
In a parallel plate capacitor with plate area A and charge Q, force on one plate because of charge on the outer equals
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