A current of 30.0 mA is maintained in a single circular loop of 3.80 m circumference. A magnetic field of 0.510 T is directed parallel to the plane of the loop.(a) Calculate the magnetic moment of the loop.

A conducting w ire carrying a steady current I is shaped as shown in thefigure below. All connected straight segments meet at right angles. Whatis the magnetic moment of the current loop?I abbaˆiˆjˆk(a)Iab (ˆj + ˆk)(b)Iab (ˆj − ˆk)(c)√2Iab (ˆj + ˆk)(d)Iab (ˆk − ˆj)11

The plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19-T magnetic field.The loop carries a current of 6.2 A.(a) What torque acts on the loop?(b) What is the magnetic moment of the loop?(c) What is the maximum torque that can be obtained with the same total length of wirecarrying the same current in this magnetic field?

The figure shows a wire with a loop in it. The current through the wire is 5.00 A and the diameter of the loop is 3.40 cm. What is the magnetic field at the center of the loop?

A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.250 A. The loop is inside a solenoid, with the plane of the loop perpendicular to the magnetic field of the solenoid. The solenoid has 30.0 turns/cm and carries a clockwise current of 15.0 A.(a) Find the force on each side of the loop.magnitude µNdirection (b) Find the magnitude of the torque acting on the loop. N · m

A square loop of area 25 cm2 has a resistance of 10 Ω. The loop is placed in uniform magnetic field of magnitude 40.0 T. The plane of loop is perpendicular to the magnetic field. The work done in pulling the loop out of the magnetic field slowly and uniformly in 1.0 sec, will be2.5×10−3 J1.0×10−3 J1.0×10−4 J5×10−3 J