# Electrostatic basic

1. Sep 23, 2008

### ankitmohan91

why like charges repel n unlike charge attract each other?????????

2. Sep 23, 2008

### CompuChip

What sort of answer do you want?
The empirical one (people have always observed that it is so), the electrodynamical answer (the force law between charges depends on the product $q_1 q_2$), the field theoretical one or the standard-model argument?

My point it, is seems to be such a basic fact of nature that you can get as fundamental as you want.

3. Sep 24, 2008

### granpa

it moves toward the state of minimum energy.

4. Sep 24, 2008

### ankitmohan91

why its a fact i want to knw that ?????????

5. Sep 24, 2008

### ankitmohan91

can u plz explain how they move towards state of min energy?

6. Sep 24, 2008

### granpa

i can explain why its the state of minimum energy.

the energy in each infinitesimal part of the field is proportional to the square of the field intensity. when 2 like charges overlap then their fields are everywhere doubled. hence four times the energy of a single particle is stored. when they repel apart that leaves half the energy to be released as kinetic energy.

7. Sep 24, 2008

### ankitmohan91

tis shows y like repel each other wat abt unlike charges???

8. Sep 24, 2008

### granpa

same thing. the field of 2 overlapping unlike charges is zero. all the energy is released as light.

9. Sep 24, 2008

### ankitmohan91

thanks

but can u provide me link of tis if u knw(multimedia)

i cant get u completely

10. Sep 24, 2008

### granpa

I'm not aware of any

11. Sep 24, 2008

### ankitmohan91

kkkkk still thanks for the answer

12. Sep 24, 2008

### CompuChip

Yes, so did a lot of other people. This has led to the development of theories like the Standard model, QFT and string theory

13. Sep 24, 2008

### rbj

because they are extremely heterosexual and homophobic.