Question

A nail is magnetized as shown in the figure. Which polarity will develop at A and B? *



A - North, B-North

A - North, B-South

A - South, B - South

A - South, B-North

Other:


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Answer 1

Here is your answer:

Using a Compass to Identify Magnet North Pole

• Take a magnetic compass and place it close to but not touching your magnet.
• Watch carefully at where the compass needle points. The point that normally points to the north pole of Earth should point to one end of the magnet.
• That end is actually the South pole of the magnet.

Explanation:

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Answer 2

Answer: Option B) A - North , B - south

Explanation:

In the given diagram, point A of the nail is near the north pole of the magnet. Therefore, point A will develop north polarity.

One end of the nail is point A and the other and is indicating point B. Point A is developing north polarity, then point B (Other end of the nail) must develop south polarity.

Polarity at each end of the nail should be opposite because magnetic field lines originate from the north pole and end at the south pole.

Direction of magnetic field lines : From North to South pole.

(Note : Same or like poles repel each other but different or unlike poles attract each other)

Therefore,  Option B is correct. Point A - North , Point B - South.

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