Question

what is an hard disk​

Answer 1

Answer:

What is an hard disk?

Ans ) A data storage device that lives inside the computer.

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• It has spinning disks inside where data is stored magnetically.

• Hard disks are flat circular plates made of aluminum or glass and coated with a magnetic material.

• Hard disks for personal computers can store terabytes (trillions of bytes) of information.

Answer 2

Answer:

An iron bar is magnetised by a single touch method by moving a permanent magnet with its North pole on the bar. Whatpolarity will be developed at the end at which the bar magnet is lifted ?