a circular coil of wire has 21 turns and a radius of 0.35 m. If it is immersed within a uniform magnetic field of 0.74 T, what is the maximum torque that can be exerted on the loop if the current in the loop is 10.1 A? Assume that the axis of rotation is parallel to the plane of the loop and goes through its center.

A wire of length 22.4 cm carrying a current of 4.19 mA is to be formed into a circular coil and placed in a uniform magnetic field B of magnitude 5.44 mT. The torque on the coil from the field is maximized. (a) What is the angle between B and the coil's magnetic dipole moment? (b) What is the number of turns in the coil? (c) What is the magnitude of that maximum torque? (a) Number Units (b) Number Units (c) Number Units

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A small circular coil consisting of 19 turns of wire lies in a uniform magnetic field whose magnitude is 0.49 T such that the normal to the plane of the coil makes an angle of 60° with the direction of B. The radius of the coil is 4.0 cm, and it carries a current of 3.2 A. (a) What is the magnitude of the magnetic moment of the coil? A m2 (b) What is the magnitude of the torque exerted on the coil? N.m

A circular wire loop has 100 turns and a radius of 20 cm. The loop carries a current of 10.5 A and is in a magnetic field of 7500 G. Find the maximum torque in the loop.

What should be the length of an ideal solenoid consisting of 1250 turns for the magnetic field in its interior to be 0.025 T? A current of 2.0 A is flowing through the solenoid.

A circular coil 20.0 cm in radius and composed of 145 tightly wound turns carries a current of 2.60 A in the counterclockwise direction, where the plane of the coil makes an angle of 15.0° with the y axis (see figure below). The coil is free to rotate about the z axis and is placed in a region with a uniform magnetic field given by B = 1.15 ĵ T. y 0 = 15.0° (a) What is the magnitude of the magnetic torque on the coil? N. m (b) In what direction will the coil rotate? counterclockwise as seen from the +z axis clockwise as seen from the +z axis

A rectangular coil consists of N = 140 closely wrapped turns and has dimensions a = 0.400 m and b = 0.300 m.  The coil is hinged along the y axis, and its plane makes an angle ? = 30.0° with the x axis (figure). What is the magnitude of the torque exerted on the coil by a uniform magnetic field B = 0.610 T directed in the positive x direction when the current is I = 1.20 A in the direction shown? If you are looking downward from the positive ydirection, what is the expected direction of rotation of the coil?

A 60.0-cm length of wire carries a current of 10.0 A. It is bent into an equilateral triangle loop and placed with its normal perpendicular to a magnetic field with a magnitude of 0.750 T. What is the torque on the loop in N•m? The answer is integer.

A permanent magnet has a magnetic dipole moment of 0.160 A · m2. The magnet is in the presence of an external uniform magnetic field (provided by current-carrying coils) with a magnitude of 0.0800 T, which makes an angle of 29.0° with the orientation of the permanent magnet.(a)What is the magnitude of the torque (in N · m) on the permanent magnet? N.m (b)What is the potential energy (in J) of the system consisting of the permanent magnet and the magnetic field provided by the coils? J