Question

Question 25
Yogesh takes a magnetic compass in the lab and tries to show how it works to his friends. But,
it does not work well in the laboratory. It just swings to and forth. He then takes it out in the
field and it started working. What do you think could be the possible reasons for this?​

Answer 1

Answer:

can be due to the deflection by magnetic field of the laboratory.

but when he moves out in the field the deflection gradually decreases because of the decrease in the magnetic field and the compass works properly

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Answer 2

Answer:

A compass works by detecting the Earth’s natural magnetic fields. The Earth has an iron core that is part liquid and part solid crystal due to gravitational pressure. It is believed that movement in the liquid outer core is what produces the Earth’s magnetic field. It doesn't work in the lab because there are no geomagnetic reversal.

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