Magnets

Magnets

Multiple Choice

When a magnet is placed on a plastic plate with common pins spread on it, then ----

• Pins stick all around the magnet

• Pins stick at the middle of the magnet

• Pins stick at the ends of the magnet

• None

Multiple Choice

Which of the following is not a non-magnetic materials?

• Glass

• Wood

• China ware

• Nickel

Poll

What is magnet?

• A magnet is a material or object that produces a magnetic field.

• A magnet is a material or object that produces a electric field.

Magnet

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other magnetic materials, such as iron, and attracts or repels other magnets.

Multiple Choice

What is the meaning of invisible in previous slide?

• We can see the magnetic field

• We cannot see the magnetic field

Magnetic Force and Magnetic Field

https://www.youtube.com/watch?v=R4ht2RcWVlI

Multiple Choice

What is the meaning of contact force in the video?

• The magnetic force needs a touch to pull the magnetic material.

• The magnetic force doesn't need a touch to pull the magnetic material.

Multiple Choice

According to the video In which part the magnetic field will be the strongest one?

• At the poles

• Closer to a magnet

• away to a magnet

Magnetic Field

https://www.youtube.com/watch?v=SCnGfE7qxHc

Multiple Select

Magnetic Field lines

• go out from south pole

• go out from north pole

• come in to the north pole

• come in to the south pole

Multiple Choice

When two magnets attract, they ______________

• push apart
• change color
• get colder
• pull together

Multiple Choice

When two magnets repel, they ________________

• change color
• pull together
• push apart
• get colder

Multiple Choice

What will happen when these magnets are brought close together?

• They will attract each other.

• They will repel each other.

• They will stay the same.

Multiple Choice

What will happen when these magnets are brought near each other?

• They will repel each other.

• They will attract each other.

• They will stay at the same position.