Question 1:

Expanded from Homework: A wire is bent into a semicircle of radius r forms a closed circuit with N 2 22 loops having a resistance of 2.87 9 and is supplied with AV : l 1.89 Vdc. The wire lies in the xy plane, and a uniform magnetic eld is directed along the positive yaxis as in Figure. Fl ssume a ma_net1 I field B = #0 2Ids , and system has radius : 24 cm, #0 : 4x10A7 T'm'A'l. Show the integration step by ' I A' Use B : 0.63 T, which means you will be given B. step and then solve numerically the following. Find the magnitude of a) current, b) internal resistance of the power supply 0) the magnetic eld, (:1) the power in the system c) and direction of the magnetic force acting on the straight portion of the wire 1') and on the curved portion between 6000 and 120. (100 pts) Example 28.4: A wire bent into a semicircle of radius r forms a closed circuit with resistance of 1.47 Q and is supplied with 6.0 Vdc. The wire lies in the xy plane, and a uniform magnetic eld is directed along the positive yaxis as in Figure. Find the magnitude a) current being supplied, b) and direction of the magnetic force acting on the straight portion of the Wire c) and on the curved portion between 60 and 120. Assurn a 0.75 T magnetic eld and radius = 24 cm. Show the integration step by step and then solve numerically. (20 pts). d3