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Grade 12: Fundamentals of Magnetism

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Questions and Answers

What is the term for the process of making a material temporarily or permanently magnetic?

Electromagnetism

Magnetization (correct)

Magnetic induction

Ferromagnetism

What is the end of a magnet that will point to the north when suspended freely?

Magnetic axis

North pole (correct)

South pole

Magnetic center

What are the materials that are attracted by a magnet?

Paramagnetic materials

Diamagnetic materials

Magnetic materials (correct)

Electromagnetic materials

What is the term for a material that is not attracted by a magnet and cannot be made into a magnet?

Nonmagnetic material Signup and view all the answers

What is the most common natural magnet?

Lodestone Signup and view all the answers

What is the term for the portions in a magnet where the magnetic force is greatest?

Poles Signup and view all the answers

What is the unit of magnetic field in the SI system?

Tesla Signup and view all the answers

What is the condition for a charge to experience a non-zero magnetic force when placed in a magnetic field?

The charge must be moving and the velocity of the magnetic field must have a component that is perpendicular to the charge. Signup and view all the answers

What is the direction of the magnetic force on a charge in a magnetic field?

Perpendicular to the magnetic field Signup and view all the answers

If the proton in the sample problem is replaced by an electron, will it experience the same maximum force?

No, because the charge and mass of the proton and electron are different. Signup and view all the answers

What is the magnitude of the magnetic field in the sample problem?

2.0 µT Signup and view all the answers

What is the unit of measurement for the magnetic field in the sample problem?

Microtesla Signup and view all the answers

What is the primary characteristic of diamagnetic materials?

They are repelled by magnetic fields Signup and view all the answers

What is the purpose of Figure 6?

To show the alignment of magnetic domains in a diamagnetic material Signup and view all the answers

What is the force experienced by a charged particle moving in a magnetic field?

F = qv x B Signup and view all the answers

What is the direction of the magnetic force on a moving charge?

Perpendicular to both the velocity and magnetic field Signup and view all the answers

What is the relationship between the velocity of a charge and the magnetic field?

vB sinθ = F Signup and view all the answers

Which of the following materials is NOT diamagnetic?

Iron Signup and view all the answers