Inside a motor, 30.0 A passes through a 250 -turn circular loop that is 10.0 cm in radius. What is the magnetic field strength created at its center?
The magnetic field strength calculated is 0.047 T.
The Current inside a motor is
The number of turns in the loop is
The radius of the wire is
The magnetic impact of electric charges in relative motion and magnetized objects is described by a magnetic field, which is a vector field.
The following equation can be used to obtain the magnetic field strength created at the center,
Where and R are the number of turns, the magnetic permeability of vacuum, and the radius of the wire, respectively.
Substitute the given data in equation (1), and we get,
Therefore, the magnetic field strength is 0.047 T.
What force is exerted on the water in an MHD drive utilizing a -diameter tube, iflocalid="1654594579558" current is passed across the tube that is perpendicular to alocalid="1654594587153" magnetic field? (The relatively small size of this force indicates the need for very large currents and magnetic fields to make practical MHD drives.)
(a) A 0.750-m-long section of cable carrying current to a car starter motor makes an angle of 60º with the Earth’s field. What is the current when the wire experiences a force of ? (b) If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75-T field, what force is exerted on this segment of wire?
(a) Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a charge and flies due west at a speed of 660 m/s over the Earth’s south magnetic pole, where the magnetic field points straight up. What are the direction and the magnitude of the magnetic force on the plane? (b) Discuss whether the value obtained in part (a) implies this is a significant or negligible effect.
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