electrostatic charges

10. - A parallel capacitor of plate area 2m 2 and plate separation 5 mm is charged to 10,000 V in free space. Calculate (a) capacitance (b) Charge (c) Charge density (d) Field intensity (e) Field displacemen..

03. - If a piece of metal has a charge +0.1 m C and is placed inside a hollow metal sphere of radius 20 cm (with touching it), what is the potential of the sphere? What will the potential of the sphere become, if a) the sphere is temporarily Earthed and then left insulated? b) if the meta..

04. - Charges of +20 esu, +9 esu and -5 esu are placed at the corners A, B and C respectively of a D ABC shown in the figure. Calculate the potential at the midpoint O of B..

Consider two points 'a' and 'b' in an electrostatic field of a single isolated point charge +..

2 due to q 1 . where 'r 1 2 ' is the distance between points 1 and 2. As the electrostatic force is conservative, the work done is stored as potential energy and is given by The potential 'V' would be same, even if the charge q 2 is brought from infinity to a point first..

Potential due to a System of Charges - Potential at a point due to a system of charges is the sum of potentials due to individual charges Consider a system of charges q 1 , q 2 , q 3 , …q n with positive vectors r 1 , r 2 , r 3 ,…..r n relative ..

Summary - Electric charge is a basic property of all matter. Unlike charges attract, like charges repel. Conductor allow flow of electric charges through them while insulators don't. Electric charges have three basic properties (a) Additivity (b) Qu..

>(Remember what happened when the two glass rods rubbed with silk and the two ebonite rods rubbed with fur were brought near each other). When the charges are not similar they attract each other. (When the charged glass rod is brought near a charged ebonite rod, both t..

As we know, the electrostatic field inside the conductor is zero and on the surface, the electrostatic field is normal to the surface at every point. No work is done in moving a small test charge, within the conductor and on its surface. We find there is no potential ..