Figure P27.19 shows a conducting rod suspended from a spring in a region where a uniform magnetic field points horizontally out of the page. The rod can be supplied with current by two thin wires connecting its ends to the terminals of a battery (not shown).

(a) Does the tension in the spring depend on whether or not the wires are connected to the battery?

(b) Does the tension depend on which wire is connected to which battery terminal? If so, which wire should be connected to the positive terminal in order to increase the tension in the spring?

Data from Figure P27.19

Transcribed Image Text:

B out of page