Question 5 a) A student measures the electric flux through a closed spherical surface of volume V to be X. She then removes the charge from inside the spherical surface and places it in a closed cylindrical surface of volume V/2. She then claims that the flux through the cylindrical surface is 2X. Is the student right or wrong ? Give reasons to your answers EV (8) b) You have four point charges, 2q, q, -q and -2q. If possible, describe how you would place a closed surface that encloses at least 2q and through which the net flux is + 3ą ii. 80 -2ą iii. 80 i. 0 CR(7) c) How does the electric field enclosing a given charge vary when the area enclosed by the charged is doubled. Assuming the electric flux is constant. EV (5)

Question 5 a) A student measures the electric flux through a closed spherical surface of volume V to be X. She then removes the charge from inside the spherical surface and places it in a closed cylindrical surface of volume V/2. She then claims that the flux through the cylindrical surface is 2X. Is the student right or wrong ? Give reasons to your answers EV (8) b) You have four point charges, 2q, q, -q and -2q. If possible, describe how you would place a closed surface that encloses at least 2q and through which the net flux is + 3ą ii. 80 -2ą iii. 80 i. 0 CR(7) c) How does the electric field enclosing a given charge vary when the area enclosed by the charged is doubled. Assuming the electric flux is constant. EV (5)