An infintie by long plate has surface change density `sigma` As shown in the fig .apoint charge `q` is moved form `A` to `B` .Net work done by electric field is A. `(sigmaq)/(2epsilon_(0))(X_(1)-X_(2))`B. `(sigmaq)/(2epsilon_(0))(X_(2)-X_(1))`C. `(sigmaq)/(epsilon_(0))(X_(2)-X_(1))`D. `(sigmaq)/(epsilon_(0))(2pir+r)`

An infintie by long plate has surface change density `sigma` As shown

1.	An infintie by long plate has surface change density `sigma` As shown in the fig .apoint charge `q` is moved form `A` to `B` .Net work done by electric field is A. `(sigmaq)/(2epsilon_(0))(X_(1)-X_(2))`B. `(sigmaq)/(2epsilon_(0))(X_(2)-X_(1))`C. `(sigmaq)/(epsilon_(0))(X_(2)-X_(1))`D. `(sigmaq)/(epsilon_(0))(2pir+r)`
Answer» Correct Answer - A `W_("net")=qvec(E).vec(d)` where `vec(E)=(sigma)/(2epsilon_(0))hat(i):.W_("net")=q(sigma)/(2epsilon_(0)).(x_(1)-x_(2))`

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