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The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields

The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields Correct Answer a soft iron shielding is used

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A teacher asks students to suggest a method to demagnetise a magnet. Some responses are: A) "dropping a magnet on floor several times" B) "breaking the magnet into 2 halves" C) "heating the magnet" D) "throwing the magnet in water" E) "by hammering it" Which of the following are correct?
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