Consider the circuit shown in the figure, in which three lig…

Consider the circuit shown in the figure, in which three light bulbs, each with a resistance R , are connected in series. Name the light bulb on top of the circuit as 1, the light bulb in the middle as 2, and the light bulb on the bottom as 3. What happen to the intensities of the three light bulbs when the switch is closed? fig_q9_final.jpg

Consider the three wires shown in the figure, each carrying…

Consider the three wires shown in the figure, each carrying a current of the same magnitude. The currents in wires 1 and 3 are out of the page; the current in wire 2 is into the page. What is the direction of the magnetic force experienced by wire 3? fig_q11_final.jpg