62 O In Fig. 28-51a, two concentric coils, lying in the same plane, carry currents in opposite directions. The current in the larger coil 1 is fixed. Current iz in coil 2 can be varied. Figure 28-51b gives the net magnetic moment of the two-coil system as a function of iz. The vertical axis scale is set by Hnet, = 2.0 x 10-5A m², and the horizontal axis scale is set by iz, = 10.0 mA. If the current in coil 2 is then reversed, what is the magnitude of the net magnetic moment of the two-coil system when iz = 7.0 mA? A net, net,s iz (mA) (a) (b) Hnet (105 A m)

A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long sides of the rectangle are twice as long as the short sides. Find the ratio Tsquare/Trectangle of the maximum torques that these coils experience in the same magnetic field when they contain the same current. Number i Units

Using the magnetic moment, you found to calculate the current using µ =N I (Area). Take the radius of the circular loop as 0.01 meters in order to calculate its area.   My magnetic moment is 2.00E-8 All my data is attached  please find the area and current

A 15 turn circular wire loop that lies in the xy-plane has a diameter of 0.30 m. A current of 1.5 A travels through the loop such that the current is in the clockwise direction when viewed from above the xy-plane. The loop is in a uniform magnetic field: B = +1.5 T j – 2.0T k. (a) What is the magnetic moment of the current loop? (b) What is the torque exerted on the loop by the magnetic field? (c) What is the potential (orientation) energy of the coil in this magnetic field? As usual, set the potential energy equal to zero when the magnetic moment is perpendicular to the magnetic field. For any vector quantities give the answer in unit-vector notation.