Home
Class 12
PHYSICS
A certain charge Q is divided into two p...

A certain charge `Q` is divided into two parts (q) an `(Q-q)`. Later on the charges are placed at a certain distance. If the force of interaction between the charges is maximum then

A

2

B

`1//2`

C

4

D

`1//4`

Text Solution

Verified by Experts

The correct Answer is:
A
let distance between two charges is x.
the force between them.
`F=(1)/(4piepsi_(0))(q(Q-q))/(x^(2))`
xis constant, so for maximum force q(Q-q) should be maximum
`(d)/(dq){q(Q-q)}=0`
`Q-2q=0`
`implies(Q)/(1)=2`
Promotional Banner

Similar Questions

Explore conceptually related problems

A certain charge Q is divided into two parts q and Q-q , which are then separated by a certain distance. What must q be in terms of Q to maximum the electrostatic repulsion between the two charges?

A certain charge Q is divided into two parts q and Q-q , wheich are then separated by a cetain distance. What must q be in terms of Q to maximum the electrostatic repulsion between the two charges?

A certain charge Q is divided into two parts q and Q-q , wheich are then separated by a cetain distance. What must q be in terms of Q to maximum the electrostatic repulsion between the two charges?

A charge Q is divided into two charge q and Q-q. The value of q such that the force between them is maximum is

Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F, if 25% charge of A is transferred to B, then force between the charges becomes:

Two point charges Q and -Q/4 are separated by a distance x.

Two free point charges +q and +4q are placed apart a distance x . A third charge is so placed that all the three charges are in equilibrium. Then

Two point charges +Q and -Q are separated by a certain distance. The resultant electric field is parallel to the line joining the charges at the points

A parallel plate capacitor is charged by certain amount of charge Q . The force of interaction between the plates is F_(0) . If region between the plates is filled by a dielectric material, the force of interaction between the plates is F . The correct statement is

A charge Q is to be divided on two objects. What should be the values of the charges on the objects so that the force between the objects can be maximum?