You have given a power supply, copper wire, and an iron nail. What should you do to decrease the strength of the electro magnet?

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?