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why dont you multiply cos pi when you do dot product between E and dr? the path is from infinity to R. so the direction of electric field is opposite to path I think.. I know your answer is right but its a problem
Isn't that why the -ve sign is initially there
why dont you multiply cos pi when you do dot product between E and dr? the path is from infinity to R. so the direction of electric field is opposite to path I think.. I know your answer is right but its a problem
Isn't that why the -ve sign is initially there