An electric dipole is placed inside a cube. What will be the nature of electric flux from the cube surface?a)Coming out of the surfaceb)Coming in towards the surfacec)No flux at alld)Coming out from one half and coming inwards in another halfCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

An electric dipole consists of two point charges. The amount of charges is the same but their polarities are different. Therefore the sum of total charges in a dipole is always 0. But flux from a closed surface is related to the total charge inside a surface. As the total charge inside the cube is zero, so there will be no flux coming out or going in towards the surface.

Answer

The nature of electric flux from the cube surface when an electric dipole is placed inside can be explained as follows:

Electric Flux and Electric Dipole:
- Electric flux is a measure of the electric field passing through a given area.
- An electric dipole consists of two equal and opposite charges separated by a small distance.
- The electric field lines of a dipole extend from the positive charge to the negative charge.

Explanation:
- When an electric dipole is placed inside the cube, the electric field lines originating from the positive charge will intersect the surface of the cube.
- Similarly, the electric field lines terminating at the negative charge will also intersect the surface of the cube.
- As a result, there will be both incoming and outgoing electric field lines intersecting the surface of the cube.
- These electric field lines contribute to the electric flux through the cube surface.
- Since the electric field lines both enter and exit the surface, the net electric flux through the surface is zero.
- Therefore, the nature of electric flux from the cube surface when an electric dipole is placed inside is zero (option C: No flux at all).

Key Points:
- Electric dipole placed inside a cube results in both incoming and outgoing electric field lines intersecting the surface.
- The net electric flux through the surface is zero.
- No flux means that the total number of electric field lines entering the surface is equal to the total number of electric field lines exiting the surface.
- This is because the positive and negative charges of the dipole create equal and opposite field lines that cancel each other out when considering the entire surface of the cube.

In conclusion, when an electric dipole is placed inside a cube, the nature of electric flux from the cube surface is zero, meaning there is no net flux through the surface.

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