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?

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 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

A current balance is a device to measure magnetic forces. It is constructed from two parallel coils, each with an average radius of 12.5 cm. The lower coil rests on a balance; it has 20 turns and carries a constant current of 3.10 A. The upper coil, suspended 0.314 cm above the lower coil, has 50 turns and a current that can be varied. The reading of the balance changes as the magnetic force on the lower coil changes. What current is needed in the upper coil to exert a force of 1.50 N on the bottom coil? 6:00 Ammeter Variable de Wire wrapped - around disk circumference power supply 0.314 cm 50 turns 20 turns dc power supply Plate on which Stand with clamp lower coil rests Triple beam balance to weigh lower coil to support upper coil A

An eight-turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of 30.0 cm (see figure). The coil lies in the plane of the page and has a 5.72-A current flowing clockwise around it. If the coil is in a uniform magnetic field of 1.99 × 10-4 T directed toward the left of the page, what is the magnitude torque on the coil? Hint: The area of an ellipse is A = nab, where a and b are, respectively, the semimajor and semiminor axes of the ellipse. 40.0 cm |- 30.0 cm-|

A magnetic dipole with a dipole moment of magnitude 0.017 J/T is released from rest in a uniform magnetic field of magnitude 62 mT. The rotation of the dipole due to the magnetic force on it is unimpeded. When the dipole rotates through the orientation where its dipole moment is aligned with the magnetic field, its kinetic energy is 9.2 ⋅10−49.2⁢ ⋅10-4 J. What is the initial angle between the dipole moment and the magnetic field?

Consider a circular current-carrying coil with a radius of 2.5 cm and 150 turns that may rotate about an axis through its center. The coil is in a uniform, 1.6-T magnetic field. The current in the coil is 0.65 A. What will the torque on the coil be when the angle ϕ between the vector normal to the plane of the coil and the magnetic field is oriented so that the torque is one-half of its maximum value?

A current loop in a motor has an area of 0.85 cm?. It carries 240 mA current in a uniform field of 0.62 T. What is the magnitude of the maximum torque on the current loop?

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.

A square loop with 10 turns and a side length of 5.0 cm lies flat on a tabletop. The loop carries a current of 2.0 A that goes counterclockwise when viewed from above while looking down on the table. (a) What is the magnitude and direction of the magnetic moment of the loop? (b) If there is a uniform magnetic field with magnitude 0.75 T at the location of the loop that heads down through the tabletop and makes an angle of 60 degrees with the surface of the tabletop, then answer the following: (i) what is the magnitude of the net magnetic force on the loop, and (ii) what is the magnitude of the net torque on the loop? (c) Include a diagram of the situation.