How Do Like Charges Exert Force Without Using Energy?

[aditya ver.2.0]

We all know that energy is required for exerting a pull or push on anything. The amount of energy exerted is proportional to the amount of force exerted and the time period. So if we place 2 like charges near each other, then what energy do they utilize to exert repulsion force on each other.

 

[Simon Bridge]

The energy comes from the electric field.

Note: no energy is required to get a force - consider the case of stationary charges, or a magnet stuck to a fridge.
What you are thinking of is the change of energy.

 

[maheshshenoy]

The energy comes from the electric field.

Absolutely... and if you want to think of this in terms of energy, its called "Electrostatic potential energy"
Someone must have done work to bring those two charges in that position.. and the work did by that "someone" got stored up as the potential energy.

 

[Doc Al]

We all know that energy is required for exerting a pull or push on anything. The amount of energy exerted is proportional to the amount of force exerted and the time period.

Neither of those statements is true.

 

[sardar]

I would like to clarify that the concept of energy is not directly related to the force exerted by like charges. Energy is a measure of the ability to do work, while force is a measure of the interaction between two objects. In the case of like charges, the force exerted is due to the repulsion between their electric fields.

When two like charges are placed near each other, they will experience a repulsive force due to the fact that like charges repel each other. This force is a result of the electric fields surrounding the charges. The electric fields of the two charges interact with each other, causing a repulsive force between them.

The amount of force exerted between the two like charges is determined by the magnitude of the charges and the distance between them, according to Coulomb's law. This force does not require any energy to be exerted, as it is a result of the inherent properties of the charges.

In other words, the energy utilized to exert the repulsion force between two like charges is not directly related to the force itself. Instead, it is determined by the initial potential energy of the charges, which is converted into kinetic energy as they repel each other. This energy is conserved and does not change during the interaction between the charges.

In conclusion, the force exerted by like charges is not dependent on the energy utilized. It is a result of the interaction between their electric fields and is determined by the properties of the charges themselves.