Advertisements
Advertisements
Question
Consider two particles A and B of equal charges placed at some distance. Particle A is slightly displaced towards B. Does the force on B increase as soon as particle A is displaced? Does the force on particle A increase as soon as it is displaced?
Solution
Electrostatic force follows the inverse square law, `F = K/r^2`. This means that the force on two particles carrying charges increases on decreasing the distance between them. Therefore, as particle A is slightly displaced towards B, the force on B as well as A will increase.
APPEARS IN
RELATED QUESTIONS
Is there any lower limit to the electric force between two particles placed at a separation of 1 cm?
Figure shows some of the electric field lines corresponding to an electric field. The figure suggests that
A pendulum bob of mass 80 mg and carrying a charge of 2 × 10−8 C is at rest in a uniform, horizontal electric field of 20 kVm−1. Find the tension in the thread.
Two pith balls, each of mass 1.8 g, are suspended from the same point by silk threads each of length 20 cm. When equal charge Q is given to both the balls, they separate until the two threads become perpendicular. Then the charge Q on each pith ball is ______.
Note: `[1/(4piepsilon_0) = 9 xx 10^9)]`nm2/c2
A car moving on a horizontal road may be thrown out of the road in taking a turn:
