PHYS 1A Lecture 5: Chp 3 2D Kinetics pt 1

Which energy conversion occurs in a battery-powered flashlight?

comment on the feasibility of cooling your kitchen in the summer by opening the door to the electrically powered refrigerator.

 Three circuits are powered by identical batteries. Circuit A contains a resistor. Circuit B contains a resistor. Circuit C contains a resistor. Rank the currents in the circuits from largest to smallest.