24 Replies
@Gyro Gearloose
Note for OP
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1/2 epsilon0 E^2 hota tha jaha tak mujhe yaad aara
AC bahot achcha to nahi hai but kya ye idhar ni lagra??
AC ka toh ques hi nahi hai
thats energy density
oh ha 💀
ma apna clown behaviour kahi aur le jaata hu
Ig yea isme energy density nikal lo which is 1/2eipsilon E^2 + 1/2 B^2/u then multipy this by voume which is area * lenght where lenght is speed of wave * time
Speed of wave to nikal hi jayegi
oh shit length aise bhi toh likh sakte
damn
Yes
ismein E^2 likhte hue pura function likhna hai ??
Aage kya karu
I converted magnetic field energy density in terms of E using E=vB
That formula i wrote above after simplification reduces to epsilon * E^2 in this u put thr whole expression for E and take average butbsince average of sin^2 func os just 1/2 u can acc write ur formula to just be 1/2 * epsilon * E0^2 where E0^2 is ur amplitude
can u share it in written
Ac me pada hoga average of trig functions
But im not to sure abt this one too is it right?
ans is yes
isnt E=vB
here tho v=c
Yes
Yea
why did we take avg
Ig because if u look at it otherwise energy will be a fun of cos^2 so it will osciallte in time, but que asks us for a certain interval so we take average
Since que clearly wants some constant and not a cos^2 function as our ans
so we are supposed to take avg over x=0 to x=vt
??
No wait let me try integrating and finding out the avg
Nvm it acc uses double integral since we have space and time both, but here u see firstly u find the average energy density by taking average of cos^2 func over 1 full wavelenght and 1 full time period then u multiply it by volume to get average energy transferred in tht volume, u get me?
guess ill come back to this after practicing more em waves
+solved @vj25_
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