A. An energy source forces a current of 2A through a load for 10s. Suppose 2.3kJ of energy is given off by the load in the form of heat and light. Calculate the voltage drop the load. Assume the current is not time-varying.
B. Suppose it requires -30J of energy to move a point charge q from point a to point b." the voltage drop Vab if (a) 4 = 2C and if (b) q = -6C.