answer in joules

An electron and a proton are initially very far apart(effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.38E-11 meters. What is the change in electric potential energy?

answer in joules

The anode(positive terminal) of an X-ray tube is at potential of +90000 V with respect to the cathode (negative terminal). How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode?

Answer in coulombs

A car battery has a rating of 245 ampere hours (Ah). This rating is one indication of the total charge that the battery can provide to a circuit before failing. What is the total charge (in coulombs) that this battery can provide?

answer in (degrees celcius)^-1

A coil of wire has a resistance of 38.0 ohms at 25 degrees celcius and 43.7 ohms at 55 degrees celcius. What is the temperature coefficient of resistivity?

answer in volts

Three capacitors(4.0, 6.0 and 15.0 Micro Fahrads) are connected in series across a 50 volts battery. Find the voltage across the 4.0 micro Fahrad capacitor.