In an electric motor, a coil with 112 turns of radius 2.40 cm can rotate between the poles of a magnet. The magnetic field magnitude is 0.200 T. When the current through the coil is 46.4 mA, what is the maximum torque that the motor can deliver?

A particle of mass m=3.1×10−5kg  and charge q=43μC  moves with a velocity v⃗ =−2.1×104ms−1 i^  along the x axis. a) Find the magnitude of magnetic field created by this charged particle at a distance d=37cm  from the x axis. Draw a schematic diagram. b) Now, if the charged particle moves in an uniform external magnetic field, B⃗ =−3.8T k^ , then calculate the magnetic force experienced by the charged particle in unit vector notation. x component of the magnetic force y component of the magnetic force z component of the magnetic force c) What will be the shape of the path of the charged particle moving in the uniform external magnetic field. Draw a schematic diagram and calculate a geometric quantity that can help you explain the path. d) Along with the external magnetic field, if we now apply an external electric field on the charged particle in a particular direction - the particle moves in a stright line. Explain why. And calculate the external electric field in unit vector notation.…

During a transcranial magnetic stimulation (TMS) treatment, a magnetic field, typically of magnitude 5.00 T, is produced in the brain using external coils. During the treatment, the current in the coils (and hence the magnetic field in the brain) rises from zero to its peak in about 65.0 us . Assume that the magnetic field is uniform over a circular area of diameter 2.00 x 10-² m inside the brain. What is the magnitude of the average induced emf around this region of the brain during the treatment? average induced emf: V

In an electric motor, a coil with 100 turns of radius 2.0 cm can rotate between the poles of a magnet. The magnetic field magnitude is 0.20 T. When the current through the coil is 50.0 mA, what is the maximum torque that the motor can deliver?