Q. A parallel-plate capacitor with circular plates of radius 0.12 m is being discharged. A circular loop of radius 0.28 m is concentric with the capacitor and halfway between the plates. The displacement current through the loop is 1.9 A. At what rate is the electric field between the plates changing?
Q. A 50kg block and a 100kg block are connected by string. the pulley is frictionless and of negligible mass. the coefficient of kinetic friction between the 50kg block and incline is 0.250. determine the change in the kinetic energy of the 50kg block as it moves from A to B, a distance of 20m.