Electrostatics ...

The protonic charge in 100 gm of water is .......... c

The rate of alpha particle falls on neutral sphere is 10¹² per second. The time in which sphere gets charged by 2c is ......... sec.

A charge Q is divided into two parts and then they are placed at a fixed distance. The force between the two charges is always maximum when the charges are .........

Two point charges repel each other with a force of 100 N. One of the charges is increased by 10% and other is reduced by 10%. The new force of repulsion at the same distance would be ........ N.

Given that q₁ + q₂ = q if the between q₁ and q₂ is maximum, q₁/q……..

Two small conducting sphere of equal radius have charges +1c and – 2c respectively and placed at a distance d from each other experience force F₁. If they are brought in contact and separated to the same distance, they experience force F₂. The ratio of F₁ to F₂ is ………

Three charges, each of value Q, are placed at the vertex of an equilateral triangle. A fourth charge q is placed at the centre of the triangle. If the charges remains stationery then, q = ...............