Question

Two point charges Q and q are placed at a distance of x and x/2 respectively from a third point charge of values 4q ,all charges being in the same straight line. Calculate the magnitude and nature of charge Q such that the net force experienced by the q charge is 0

Answer 1

Question

Two point charges Q and q are placed at a distance of x and x/2 respectively from a third point charge of values 4q ,all charges being in the same straight line. Calculate the magnitude and nature of charge Q such that the net force experienced by the q charge is 0

Solution

The magnitude of the charge would be 4q and it is a negative charge

Given

A charge Q is placed at a distance x from the charge 4q. Another charge q is placed at x/2 from the charge 4q

To finD

Nature and Magnitude of Charge Q

If the net charge at q has to be zero,

➠ Q + 4q = 0

➠ Q = - 4q