moving vertically upward from the ground. What is the direction of the location

Question

moving vertically upward from the ground. What is the direction of the location near the equstor, the earth's magnetic field is horinontal and points north. Am electron is foece that acts on the electron (a) East (b) South (e) North (e) West ing loop is placed in a uniforma magnetic field B with the plane of the loop parallel to the magnetic field (see the drawing). The dashed line is the axis of rotation. The magnetic field exerts (a) neither a net foece nor a net torque on the loop (b) a net force and a net torque on the loop (c) a net force, but not a net torque, on the loop (d) a net torque, but not a net force, on the loop center o leas wire have the same magnetic moment. The first coil has a radius of 0.097 m, N-150 turns, and carries a current of L 25 A. The second coil has N-220 tarns and carries a of 1-75 A. What is the radius of the second coil? (Hint Magnetic moment of s coid- NIA, area Ae 12. The long straight wire carries a current of S.0A along the z direction. (a) Calculate the from the wire. (B-Hol2ar, .-4m10.' N/A of the magnetic field at a distance of 0.050 m

Explanation / Answer

Q9.

let unit vector along north be j , unit vector along east be i and unit vector along vertically upwards is k.

magnetic field B is along j and v is along k.

charge is negative.

force=charge*cross product of velocity and magnetic field

=(-e)*vector along (-i)

=vector along i

so force is acting along East.

option A is correct.

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