Calculate the magnitude of the magnetic field at point P due to the current in the curved section of the wire which is 45° arc of a circle with radius r? O Hol/16r Hol/2r O Hol/32r O Hol/4r Hol/r 45.

A lightning bolt may carry a current of 1.00 x 104 A for a short period of time. What is the resulting magnetic field 97 m from the bolt? Assume that the bolt extends far above and below the point of observation. μT Need Help? Read It

A lightning bolt may carry a current of 1.00  104 A for a short time. What is the resulting magnetic field 50 m from the bolt? Suppose that the bolt extends far above and below the point of observation.

A closed current loop shaped as shown in the figure produces a magnetic field at point O, the center of the two concentric semicircles. The radiuses of two semicircles are R and 2R. What is the magnitude of magnetic field at point O? R 2R (a) What is the magnitude of the magnetic field at the center of the loop? O HoI 2R HoI 8TtR HoI 4R O HoI 8R 8R SC... (b) What is the direction of the magnetic field? O Up O Left le O Rigth me O Into the page O Out of the page

Suppose we have set up a magnetic field along the +y-direction with a field strength of 0.05T. If a proton is movingat a speed of 2.50×106m/s at an angle of 40o with the direction of a magnetic field what is the acceleration experienced by the proton?

A wire carrying a current is  shaped in the fom of a circular loop of radius 4.0 mm.  If the magnetic field strength at its center is 1.1 mT with no external magnetic field contributing to it, what is the magnitude of the current that flows through the wire?