Question
Electrical cluirges ami magnetic poles have many similarities, but one difference is: opposite magnetic poles repel. one magnetic pole cannot create magnetic poles in Oliver materials. a magnetic pole cannot be isolated. magnetic poles do not produce magnetic fields. Geophysicists today generally attribute the existence of the Earth's magnetic field to which of the following? convection currents within the liquid interior iron ore deposits in the crust nickel-iron deposits in the crust solar flares The magnetic pole of the Earth nearest the geographic North Pole corresponds to which of the following? a magnetic north pole a magnetic south pole a magnetic arctic pole a magnetic Antarctic pole The force on n charged particle created by its motion in a magnetic field is maximum at what angle between the particle velocity and field? zero 180 degree 90 degree 45 degree A proton moving at a speed of 3.8 times 10^6 m/s cuts across the lines of a magnetic field at an angle of 70 degree. The strength of the field is 0.25 times 10^-4 T. What is the magnitude of the force acting on the proton? (q_p = 1.6 times 10^-19 C) 1.4 times 10^-17 N 9.0 times l0^-18 N 5.1 times 10^-18 N 2.3 times 10^-17 N There is a magnetic force on a particle. It is possible that the particle is: uncharged. stationary. moving in the direction of the magnetic field. not part of a wire.
Explanation / Answer
1. (c)
2. (a)
3. (b)
4. (c)
5.(a)
6. (d)
