Question

assertion-steel core is used as an electromagnet. reason- steel gets permanently magnetised when the current flows through the coil wound around.​

Answer 1

The assertion is False, but the reasoning is True

• Soft iron instead of steel must be employed to construct the electromagnet's base.
• This is due to the reason that steel drops its magnetic properties when the current in the coil is turned off. When the current is cut off, steel retains its magnet.
• An electrical current passing through a coil of wire wrapped around the core can magnetize and demagnetize it.
• The core becomes momentarily magnetic when an electrical current passes through the coil and creates a magnetic field. The steel core stops being magnetic when the current is cut off.
• However, the steel core becomes permanently magnetized if the current flows for a specific amount of time.

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Answer 2

Answer:

The assertion "Soft iron instead of steel must be employed to construct the electromagnet's base" is False.

The reasoning provided, "This is due to the reason that steel drops its magnetic properties when the current in the coil is turned off" is also False.

Explanation:

Steel does not retain its magnetism when the current is cut off. It stops being magnetic when the current is cut off. However, the reasoning provided in the rest of the statement is True. An electrical current passing through a coil of wire wrapped around the core can magnetize and demagnetize it. The core becomes momentarily magnetic when an electrical current passes through the coil and creates a magnetic field. The steel core stops being magnetic when the current is cut off. However, the steel core becomes permanently magnetized if the current flows for a specific amount of time.

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