Question

i Chrome File Edit View History Bookmarks People Window Help 0寓令동 빼 17% D Thu 12:10 PM Parker a E Mathway I Math Problem Solv Chegg Study | Guided Solutio Physics 296 x hot to take a screenshot on m Parker ← → ⓘ www.physics.louisville.edu sbmendes/phys%202 24%20fa1%2017/labs/Lab%20V119620%20Magnetic%20Force%20and%20Current%20Balance.pdf :: Apps School Guitar Magic Play YouTube Monetization Potential Videos Pokemon ⑤ Variable-Biology-... ) pokemonthenovel-@ Home | SSC Campus Physics 296 3/6 Apparatus The main part of the set-up used in this lab is shown in Figure1. Wire AB is a conducting rod and is fixed on the board of the current balance. The vertical position of Wire AB is thus fixed. Wire CD is also a conducting rod and is part of the frame KCDK'. Except for a plastic rod connected between K and K', the rest part of the frame is metallic and thus conducting. The frame has two supporting knife edges (not shown): one under K; the other under K'. The frame is supported only by the two knife edges which are placed on the two short parallel brass supporting beams on the board. It can thus rotate freely around the line connecting the two knife edges, allowing Wire CD to move away from or towards Wire AB. A C mirror to wire DC Power Sugply Figure 1 Figure 2 First, adjust the knife edges until Wire AB and Wire CD directly face each other. As described in the Coulomb Balance, the frame is balanced mainly by the frame and Weight P, and secondary by Weight P (located under Rod KK). By rotating it, Weight P can move (by rotating) along the attached rod to change its lever arm. Weight P, which can slide up and down (by rotating) to change its lever arm, is used to change the time period of oscillation of the frame and to equilibrate the frame. Metallic Pane Q is placed between two horseshoe magnets and is used to damp oscillation of the frame. Make sure that Pane Q does not touch these magnets. Note: for small-angle rotation, the position of Weight P is important for efficiently stopping oscillation of the frame and to increase the sensitivity of the experiment. After adjusting P and P, the frame should be able to rotate freely around the line connecting the two knife edges but its oscillation is efficiently damped; Wire AB and Wire CD are aligned parallel with each other, with Wire CD above Wire AB, and separated by

1. To use the measured d, we assume the current flows along the central axes of Rod CD and Rod AB. Because of the repulsive forces, the conduction electrons in each rod however tend to move as far away from the other rod as possible. Considering this effect, should the actual μ0 value be higher or lower than the measured μ0 value? Why?

7*10^-7 = μ0*L/2*pi*d*g

L = 0.296

d = 0.011

g = 9.8

μ0 = 1.76*10^-6

2. If the length of Rod AB is doubled while the length of Rod CD remains the same, will the result change?

Answer 1