1Q1. Work done = (potential difference)* charge.
VB = q2/4πε0y + q1/4πε0√(y2+x2)
VA=q1/4πε0y + q2/4πε0√(y2+x2)
If charge moved = Q
Work done= Q(VB-VA)
Now put the values and calculate.
Q.1 find the workdone in moving a point charge 2nC frm A to B , if y=6 cm , x= 8cm , q1= 20/3 , q2= -20/3.
Q.2 three identical metal plates with large surface areas r kept parallel to each other as shown. the leftmost plate is given a charge Q, the rightmost a charge -2q n the middle one remains neutral , find the chargre appearing on the outer surface of the rightmost surface.
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4 Answers
1q2
let d cherge on d outermost plate be
Q+q .........then go on wid induction.......
n in d end .....d potentails of d outermost plates on both sides will b same
just eqaute them u'll get q in terms of Q
hope u can find afta that :)
1
1hey for the ques.2nd my ans is comind -2Q buh the ans is -q/2