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###### Pradeep Jogsan posted an Question
August 03, 2021 • 22:42 pm 30 points
• IIT JAM
• Physics (PH)

# 31. the clectric field in thex-y plane is given by e =i8x-j4y. then equation for the lines of force is given by (a) xy' constant (b) xy= constant (c) x*+y= cons

31. The clectric field in thex-y plane is given by E =i8x-j4y. Then equation for the lines of force is given by (a) xy' constant (b) xy= constant (c) x*+y= constant (d) xy=constant H.C.U-2015] In the labaraton faur naint charaec LO 0HO Oare nlaced at the faur endc afa lhariznatal sauare af

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• ##### Bidyut sinha

check my second picture that I have sent to you for clarification..there I have explained that if you consider a general equation of ELECTRIC FIELD such as E= Ex i cap+Ey j cap...there I have compared this with the Equation of straight line...there you will get slope like things dy/dx=-y/2x... that's it... for more detail check second picture... :)..

• ##### Bidyut sinha

I have given detail Explanation in the attached picture.Answer is xy^2= constant

I couldn't understand how dy/dX=Ey/Ex

ok I am explaining you