Page 1 PROBLEM 1. A steady current / flows throughout the circuit shown below, consisting of two straight, semi-infinite lengths of wire joined by a semicircular piece (radius a). The entire circuit lies in a plane. Choose an appropriate coordinate system and calculate the magnetic field B at the point P, which is at the center of the semicircle in the plane of the circuit. Be sure to indicate on the drawing your choice of coordinate a system. (Hint: Break the problem into pieces, find the contribution to the magnetic field from each piece and then add those together.]

In the diagram at right, an uncharged conducting bar is moving with constant velocity v to the left through a region where there is a uniform magnetic field pointing out of the page. What charge distribution will the bar have, as a result of its motion? B out of page The bottom of the bar will have positive charge, and the top of the bar will have negative charge. The bar will remain electrically neutral at all points. The top of the bar will have positive charge, and the bottom of the bar will have negative charge. The right side of the bar will have positive charge, and the left side of the bar will have negative charge. The bar will gain a net positive charge, distributed uniformly along its length. The bar will gain a net negative charge, distributed uniformly along its length, The left side of the bar will have positive charge, and the right side of the bar will have negative charge.

Show Work Please (Q8)

Please show work. Consider the two wires in the figure, running at a right angle to each other. The wires carry the same current I = 5.5 mA, in the directions shown. The distances shown are d1 = 44 cm and d2 = 8.5 cm. What is the magnitude of the magnetic field, in tesla, at point A?BA = What is the magnitude of the magnetic field, in tesla, at point B?  BB = What is the magnitude of the magnetic field, in tesla, at point C?