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Find the work done in the bringing a charge q from perpendicular distance from the line of charge . A device X is connected an ac source of voltage V= V_0sin omega t . The current through X is given asI=I_ssin (omegat+(pi)/(2)) |
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Answer» SOLUTION :work DONE in moving charge .q. Through small displacement .qr. dW =`oversetto E d oversetto r ` ` dW =qoversetto Ed oversetto r` ` =qE dcos theta` `dW =qxx (lambda )/( 2pi in _0r) dr ` work done in moving the GIVEN CHARGES from ` r_1to r_2(r_2gt r_1) ` ` W=int r_1^(r_2_) dwint int _r-1^(r_2) (lambda qdr)/( 2piin_0r) ` W = `(lambda q)/( 2pi in _0) [log (r_2)/( r_1) ]` |
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