These two are conducting cylindrical shells, with an inner radius of a and an outer radius of 2a. The lower conducting cylindrical shell has its center on the origin. Is there a magnetic field at origin? what would be its direction?
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These two are conducting cylindrical shells, with an inner radius of a and an outer radius of 2a. The lower conducting cylindrical shell has its center on the origin.
Is there a magnetic field at origin? what would be its direction?
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- A proton, traveling with a velocity of 2.5 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 5.1 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a number greater than zero. If the field is down, then enter a number less than zero.An electron in the beam of a cathod-ray tube is accelerated by a potential difference of 2.14 kV . Then it passes through a region of transverse magnetic field, where it moves in a circular arc with a radius of 0.190 m . What is the magnitude of the field?In a lightning bolt, 12 C of charge flows in a time of 5.7 x 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 29 m from the bolt?
- A horizontal current-carrying wire that is perpendicular to the plane of the paper is placed in a uniform magnetic field of magnitude 2.2 mT that is parallel to the plane of the paper and points down. At the distance 1.0 cm to the right of the wire, the total magnetic field is zero.A proton, traveling with a velocity of 4.7 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.0 × 10-14 N and direction of due south. What are the magnitude and direction of the magnetic field causing the force? If the field is up, then enter a number greater than zero. If the field is down, then enter a number less than zero.Determine the magnitude of the current in the wire.
- A oxygen ion with a -2 charge is traveling in the +z direction. It enters a region of uniform magnetic field that points to the -y direction. When the ion enters this region, which direction will it be deflected?a) At what speed (in m/s) will a proton move in a circular path of the same radius as an electron that travels at 7.45 ✕ 106 m/s perpendicular to the Earth's magnetic field at an altitude where the field strength is 1.25 ✕ 10−5 T? b) What would the radius (in m) of the path be if the proton had the same speed as the electron? c) What would the radius (in m) be if the proton had the same kinetic energy as the electron? d) What would the radius (in m) be if the proton had the same momentum as the electron?Which describes the net force on a magnetic dipole in a uniform magnetic field? The net force vector is in the direction of the magnetic field. O The net force vector is in the direction opposite that of the magnetic field. The net force vector is perpendicular to the direction of the magnetic field. O The net force vector is zero.