Making A Magnent

What are artificial magnets known for?

• No attractive properties

• Strong attractive properties

• Weak attractive properties

• Variable attractive properties

What are the two types of artificial magnets based on their ability to retain magnetic properties?

• Temporary and permanent

• Weak and strong

• Small and large

• Round and square

What is the property called when any magnetic substance acquires magnetic properties temporarily due to the presence of another magnet?

• Magnetic deduction

• Magnetic induction

• Magnetic repulsion

• Magnetic attraction

What is the first step involved in making magnets using the mechanical method?

• Spreading some iron nails on the base of the stand

• Bringing a magnet close to the head of the nail

• Taking an iron nail and placing it on the arm of the stand

• Placing iron nails on the base of the stand

What happens when a magnet is removed away from the nail in the mechanical method of making magnets?

• The pins cling to the nail

• The nail becomes stronger

• The pins fall down

• The nail becomes weaker

What is the method called when a single iron piece is rubbed with a magnet to make a magnet?

• Electrical method

• Single touch method

• Double touch method

• Magnetic induction method

In the double touch method, what is placed at the middle of the iron bar?

• Two magnets of the same strength

• Two steel rods

• Two magnets of different sizes

• Two iron pieces

What is the name of the temporary magnets made by passing a current through a coil wound around a soft iron bar?

• Electromagnet

• Permanent magnet

• Mechanical magnet

• Induced magnet

How can all the magnetic properties of a magnet be destroyed?

• All of the above

• By passing alternating current around the magnet

• By heating the magnet strongly

• By hammering the magnet repeatedly

What is the main difference between temporary and permanent magnets?

• Temporary magnets are weaker

• Permanent magnets are weaker

• Temporary magnets lose magnetism quickly

• Permanent magnets retain magnetism