Question

capacitors + spring question.

Answer 1

@Mashy @shubhamsrg @DLS

Answer 2

electrostatics padado

Answer 3

:/

Answer 4

Hmmm.. ok .. this seems easy lemme try !

Answer 5

something went wrong.. try and correct it :P

Answer 6

E=sigma/2epsilon ??

Answer 7

And it is easy. :/
Thank you. :)

Answer 8

no.. 2 comes in the denominator only if you consider one charged plate

in capacitor its between 2 charged plates.. so it should be E = sigma/epsilon

Answer 9

Umm i am telling you what is written in my book. The say. "capacitor has equal and opposite charge. field due to charge on one plate on the other is sigma/epsilon" ??

Answer 10

yea sigma/epsilon.. not 2 epsilon

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elesht.html

Answer 11

typo. sigma/2epsilon * -_-
idk. :/

Answer 12

field due to each plate is sigma/2epsilon.. hence total becomes 2 times that.. so sigma/epsilon

Answer 13

OH WAIT.. yea i got it.. you are right :)

Answer 14

to find the force on one plate.. you have to consider the field due to the other plate only.. !!

Answer 15

welcome he/she aka dls :D

Answer 16

I was about to write the alternate derivation. :P
But why "you have to consider the field due to the other plate only.. !!" ?

Answer 17

@DLS ne btaya? sab aata hai saale ko. kuch btata nhi. :/

Answer 18

arre.. when you are considering force on a charge due to the field.. do you consider the field of the charge itself!?? no na??
similarly here you wanna find the force on one plate due to another plate.. so don consider the field due to the plate ON WHICH you wanna find the force!

Answer 19

no.. i just welcomed him here :D

Answer 20

Oh alright. And thank you.
I'll tag you in another question i asked long time back. My first or second question i asked here i guess.

Answer 21

oh.. nostalgia? :D

Answer 22

I cant get it . Give me a minute. I'll post it again.

Answer 23

yes,OS doesn't let you search after a certain limit
#foreverloading

Answer 24

http://www.youtube.com/watch?v=TDRT-bYRvMI