List out the uses of magnets. - Science

List out the uses of magnets.

Long Answer

In ancient times, the magnet in the form of ‘direction stone’ helped seamen to find the directions during a voyage.
Nowadays, magnets are used to generate electricity in dynamos.
Electromagnets are used in our day-to-day life.
They are used in electric bells and electric motors.
They are used in loudspeakers and microphones.
An extremely powerful electromagnet is used in the fast-moving Maglev train to remain floating above the tracks.
In industries, magnetic conveyor belts are used to sort out magnetic substances from scraps mixed with non-magnetic substances.
Magnets are used in computers in their storing devices such as hard disks.
In banks, the magnets enable the computers to read the MICR numbers printed on a cheque.
The tip of the screw drivers is made slightly magnetic so that the screws remain attached to the tip.
At hospitals, extremely strong electro magnets are used in the MRI (Magnetic Resonance Imaging) to scan the specified internal organ.

shaalaa.com

Is there an error in this question or solution?

Chapter 7: Magnetism - Exercises [Page 82]

Chapter 7 Magnetism
Exercises | Q VI. 1. | Page 82

What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.

State four important properties of a bar magnet?

Define the following term regarding a bar magnet:

Magnetic equator

How will you do this?

Explain that a magnet has a certain magnetic field.

Fill the blank spaces in the table given below:

Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic south.

What is a natural magnet?

Define the following term:

Angle of dip

Match the following.