1. Magnetic field (B) exerts a torque on a magnetic moment (m) (such as a magnet bar) to align the magnetic moment along the B- field direction. In genreal, the vector torque is defined as: t=mxB, with a magnitude of , where is the angle between m and B as shown in figure 1. However, in Eq. (1) the magnitude of t is defined as . What does the minus sign mean?
1. Magnetic field (B) exerts a torque on a magnetic moment (m) (such as a magnet...
a bar magnet of magnetic moment 6 J/T is aligned at 60 degree with a uniform external magnetic field of 0.44 T. Calculate (a) the work done in turning the magnet to align its magnetic moment (1) normal to the magnetic fiel A bar magnet of magnetic moment 6 J/T is aligned at 60° with a uniform external magnetic field of 0-44 T. Calculate (a) the work done in turning the magnet to align its magnetic moment (i) normal to...
A bar magnet is oriented with its magnetic dipole moment at 33.1° to the direction of a 0.0301-T magnetic field, causing a torque of 0.00213 N·m to act on it. Find the magnitude of the magnet\'s magnetic dipole moment.
A bar magnet is oriented with its magnetic dipole moment at 30.7° to the direction of a 0.0107-T magnetic field, causing a torque of 0.00487 N·m to act on it. Find the magnitude of the magnet\'s magnetic dipole moment.
A permanent magnet has a magnetic dipole moment of 0.120 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 18.0° 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...
A permanent magnet has a magnetic dipole moment of 0.150 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 19.0° with the orientation of the permanent magnet. a) What is the magnitude of the torque (in N · m) on the permanent magnet? b) What is the potential energy (in J) of the system consisting of the permanent magnet...
8) A non-uniform magnetic field exerts a net force on a magnetic dipole. A strong magnet is placed under a horizontal conducting ring of radius r that carries current I as shown in Figure. If the magnetic field B makes an angle ? with the vertical at the ring's location, what are the magnitude and direction of the resultant force on the ring?
1. A proton is moving at an angle of 80° to a uniform magnetic field. What is the relationship between the direction of the force on the proton and the direction of the magnetic field? * (1 Point) parallel to the magnetic field at an angle of 10° to the magnetic field at an angle of 80° to the magnetic field at an angle of 180° to the magnetic field perpendicular to the magnetic field 2. An electron is moving...
27A - Magnetic Fields and Forces 1) The force that a magnetic field exerts on a charged particle is given by È = qö x B. Assume charge q=+1.5 nC, B = 0.30 T and 0 = 25 m/s. The directions of the magnetic field vector and velocity vector are ] and , respectively are displayed on the coordinate axis below. The angle between the vectors is 90, degrees. Use unit vector notation when describing the vectors. z (0, 0,...
A small bar magnet (mass = 200 g, length = 15 cm) has a magnetic moment of 7.5 Am2. What is the maximum possible torque which could act on this magnet in a field of 5x10-5 T? A: 3.75x10^-4Nm
A circular wire loop of radius 1.13 m is placed in a magnetic field of magnitude 0.495 T. The normal to the plane of the loop makes an angle of 30.0° with the magnetic field (see figure a). The current in the loop is 1.95 A in the direction shown. a)Find the magnetic moment of the loop and the magnitude of the torque at this instant