Home
Class 12
PHYSICS
Two charges each having magnitude q and ...

Two charges each having magnitude `q` and same polarity are fixed some distance apart.A point charge `Q` is kept on exactly middle of the line joining the two charges.Then equilibrium of `Q` is

A

Stable along the line along perpendicular bisector of the line joining the two charges if Q is of same polarity as that of q

B

Neutral along the line joining the two charges for any polarity of Q

C

Stable along the line joining two charges if charge Q is of opposite polarity to that of q

D

Unstable along the line joining two charges if charge Q is of opposite polarity to that of q

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

Draw E-r and V-r graphs due to two point charges + q and -2q kept at some along the line joining these two charges.

If Two charges +q and +4q are separated by a distance d and a point charge Q is placed on the line joining the above two charges and in between them such that all charges are in equilibrium. Then the charge Q and it's position are

Two charge +aq and -q are kept apart. Then , at any point on the right bisector of line joining the two charge

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

Two positive point charges of magnitude Q each are separated by a distance "2a". A test charge 'g_0' is located in a plane which is normal to the line joining these charges and midway between them. The locus of the points in this plane for which the force on the test charge has a maximum value is

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

Two point charges q_(A)= 3mu C and q_(B) = - 3muC are located 20cm apart in vacuum. What is the electric field at the mid point of the line joining the two charges.

Answer the following: (a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole. (b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of Q.

Two charges of equal magnitude q are placed in air at a distance 2a apart and third charge -2q is placed at mid-point . The potential energy of the system is (epsi_(0) = permittivity of free space)

Two idential point charges Q are kept at a distance r from each other. A third point charge is placed on the line joing the above two charges such that all the three charges are in equilibrium. The third charge (a) should be of magnitude q=……….. (b) should be of sign ....... (c ) should be placed ........ .