Electrical charges and magnetic poles have many similarities, but one difference

Question

Electrical charges and magnetic poles have many similarities, but one difference is: opposite magnetic poles repel. one magnetic pole cannot create magnetic poles in other 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 term magnetic declination refers to which of the following? angle between Earth's magnetic field and Earth's surface Earth's magnetic field strength at the equator tendency for Earth's field to reverse itself angle between directions to true north and magnetic north The magnetic field of the Earth is believed responsible for which of the following? deflection of both charged and uncharged cosmic rays deflection of charged cosmic rays ozone in the upper atmosphere 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 a 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

Explanation / Answer

1)
Ans c) a magnetic pole cannot be isolated

2)
Ans a) convection currents within the liquid interior.

3)
Ans d) angle between directions to true north and magnetic north

4)
Ans b) deflection of charged cosmic rays.

5)
Ans b) a magnetic south pole

6)
Ans c) 900

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