Home
Class 12
PHYSICS
When identical point charges are placed ...

When identical point charges are placed at the vertices of a cube of edge length `'a'` each of them experiences a net force of magnitude `F`.
Now these charges are placed on the vertices of another cube of edge length `'b'`. What will be magnitude of the net force on any of the charges? These cubes are simply geometrical constructs and not made by any matter.

A

`(a^(2)F)/(b^(2))`

B

`(b^(2)F)/(a^(2))`

C

`(aF)/b`

D

Insufficient information

Text Solution

Verified by Experts

The correct Answer is:
A
`F_(1)alpha1/(a^(2))`
`F_(2)prop1/(b^(2))`
`(F_(1))/(F_(2))=(b^(2))/(a^(2))`
`F_(2)=(a^(2))/(b^(2)) F_(1)=(a^(2))/(b^(2))F`
Promotional Banner

Similar Questions

Explore conceptually related problems

A point charge q is placed at the centre of a cube of side length a .The electric flux emerging from one of the face of cube is

A point charge q is placed at one corner of a cube of edge a. The flux through each of the cube faces is

Equal charges Q are placed at the four corners A, B, C, D of a square of length a. The magnitude of the force on the charge at B will be

Equal charges q are placed at the four corners A,B,C,D of a square of length a . The magnitude of the force on the charge at B will be

Three point charges q are placed at three vertices of an equilateral triangle of side a. Find magnitude of electric force on any charge due to the other two.

Eight point charges , each q , are placed on the vertices of a cube of side a . Find the potential energy of the system of charges.

A charge Q is placed at the corner of a cube of edge length L. The electric flux linked to one of the faces not touching the charge Q is

Three point charges each of value + q are placed on three vertices of a square of side a metre. What is the magnitude of the force on a point charge of value -q coulomb placed at the centre of the square?