What is the force between two small charged spheres having charges of `2x10^-7C and `3x10^-7C placed 30cm apart in air?

The ratio of force between two small charged sphere(i)in air(ii)in a medium of dielectric constant'K' is

Potential energy of a system of charges is directly proportional to the product of charges and inversely to the distance between them.Two point charges 3 x 10^(-8) C and - 2 x 10^(-8) C are separated by a distance of 15cm. At what point on the line joining the charges the potential is zero?

Coulomb.s Law is a quantitative statement about the force between two point charges.Two ions carrying equal charges repel with a force of 1.48 x 10^(-8) N when they are separated by a distance of 5 x 10^(-10)m . How many electrons have been removed from each iron?

Two insulated charged copper spheres A and B have their center separated by a distance of 50 cm .What is the mutual force of electrostatic repulsion if the charge on each is 6.5xx10^(-7)C ?The radii of A and B are negligible compared to the distance of separation.

Draw the electric lines of force surrounding the charges if. Br Two - q. charges are placed at a distance .a. apart in air.

Two point charge q_(A) = 3 muC and q_(B) = -3 muC are located 20 cm apart in vacuum. (a) What is the electric field at the mid point O of the line AB, joining the two charges. (b) If a negative test charge of magnitude 1.5 xx 10^(-9)C is placed at this point. What is the force experienced by the test charge?

Electric field is an important way of characterising the electrical environment of a system of charges. Two point charges q, and q, of magnitude +10 C and-10C respectively are placed 0.1 m apart. Calculate the electric fields at points A, B and C shown in the figure.

If the air medium between the two charges is replaced by water what change you expect in the electrostatic force and why?

When a rubber sheet is rubbed with woolen carpet, the carpet is found to acquire a positive charge of 8 x 10^7C In the above process charging is by