Refer to the above diagram.
The broken lines represent a uniform static electric field intensity E. its magnitude is 10 N/C (same as 10 V/m). The edges of rectangle ABCD represent a closed loop through which there is no magnetic field. A constant charge Q equal to +5C is to be taken anticlockwise along the edges the rectangle. The intention is to evaluate the total work done (W) by the electric field as the charge is taken around the loop. Relevant details are provided in the table below. The acute angle between the electric flux lines and any side of the rectangle is 45 degrees.
W_AB = work done by the electric field on charge Q as it is transferred from position B to position C.
Which one is the correct statement?
a. All the other statements are incorrect
b. W_AB = -510^6cos(45 degrees) joule and W_C = 510^20cos(45 degrees) joule
c. W_AB = -510^6cos(45 degrees) joule and W_C = W_0
d. W_AB = 510^6cos(135 degrees) joule and W_C = W_0
