This experiment will be done in two successive laboratory periods. Using a series of measurements you will attempt to verify that the force between the two current carrying conductors is proportional to the current squared and inversely proportional to the distance separating the conductors. A sketch of the apparatus is shown on the following page.
Optical alignment is very important.
You should take care not to bump or jar any part of the table or apparatus. If by chance someone does, go back to the initial stage, no current, no weights and check the equilibrium reading. This is your equilibrium point as you change the currents and add weights. Do not raise it above 15 amps. You will have to adjust the rheostat to get a precise equilibrium.