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gOlU g3n|[0]uS Grade: Upto college level
`        A charge Q is spread uniformly in the form of a line charge density  =Q/3a on the sides of an equilateral triangle of perimeter 3a. Calculate the potential at centroid C of the triangle. reply....`
7 years ago

110 Points
```										its a fairly simple questionsee if you calculate the potential by a side multiply it by 3 and u will get the answer.now consider a problem with a line of unform charge(linear charge density:find the distance between each side and the centroid by first using pythagoras theoram and then the property of centroid which says that it divides a median in a ratio of 1:2, relative to the point.let this distance be anow just concentrate between the centroid and the sidedrop a perpendicular from centroid to the side (it will intersect exaclty at the centre of the side since medians in a equilateral tringle are same as altitudes)take an arbitrary element dx at the side with a distnce of x from the intersection point Afind the expresion of potetial at centroid due to that small element using the potential expressionkq/x, where x should be sq rt(x^2 + d^2), d being the length of perpendicularintegrate and the answer follows.........Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation.DO APPROVE IF THE ANSWER HELPS YOU.Now you can win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.Regards,Askiitians ExpertsRahul- IIT Roorkee
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7 years ago
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