Question: true or false 1 when a bar magnet needle is...
True or False
1. When a bar magnet needle is suspended and set free to move in the horizontal plane, it will rotate until its North pole points the earth’s geographic North Pole.
2. The earth is a huge permanent magnet. Its geographic North pole is the magnet’s South Pole, which attracts the bar magnet’s North Pole, so that the bar magnet or compass’s North Pole points to the earth’s geographic North.
3. Magnetic poles are always found in pairs. All attempts thus far to detect an isolated magnet pole have been failed.
4. When you cut a magnet into two pieces, one piece will have north pole and the other piece will have the south pole.
5. Electric current will not be able to generate magnetic field to deflect a compass needle.
6. Changing the current is a circuit may produce current in a nearby circuit?
7. Moving a magnet around a circuit can produce current in a nearby circuit.
8. Around static charges, there are both electric fields and magnetic fields.
9. Around moving charges, there are both electric fields and magnetic fields.
10. Magnetic field lines (outside the bar magnet) points toward north pole and way from the south pole.
11. The Earth’s magnetic field line typically pointing North on the earth surface.
12. The Earth is a huge permanent magnet, whose South Magnetic Pole is actually around the Earth’s geographic North Pole.