Magnetism Basics Quiz

Questions and Answers

What class of physical attributes occurs through a magnetic field?

Magnetic attributes

Which aspect of electromagnetism gives rise to a magnetic field?

Electric current

Which materials are strongly attracted by magnetic fields and can be magnetized to become permanent magnets?

Iron, cobalt, and nickel

What type of substances are weakly attracted to an applied magnetic field?

Paramagnetic substances Signup and view all the answers

Which materials have a more complex relationship with a magnetic field?

Antiferromagnetic materials Signup and view all the answers

What is the smallest charge that can exist freely?

Elementary charge Signup and view all the answers

What carries the negative charge in ordinary matter?

Electrons Signup and view all the answers

Which particles have smaller charges, multiples of 1/3e?

Quarks Signup and view all the answers

What is the physical property of matter that causes it to experience a force when placed in an electromagnetic field?

Electric charge Signup and view all the answers

What is referred to as electrically neutral?

An object with no net charge Signup and view all the answers

Electric charge can be ______ or negative

positive Signup and view all the answers

An object with no net charge is referred to as electrically ______

neutral Signup and view all the answers

Charge is quantized; it comes in integer multiples of individual small units called the elementary ______, e, about 1.602×10−19 C

charge Signup and view all the answers

Negative charge is carried by ______

electrons Signup and view all the answers

In the Standard Model, charge is an absolutely conserved ______ number

quantum Signup and view all the answers

Study Notes

Magnetism is a physical attribute resulting from magnetic fields that allow objects to attract or repel each other. It is one of two aspects of electromagnetism.
Magnetism arises from electric currents and magnetic moments of elementary particles.
Ferromagnetic materials, like iron, cobalt, nickel, and their alloys, are strongly attracted by magnetic fields and can become permanent magnets.
Paramagnetic substances, such as aluminum and oxygen, are weakly attracted to magnetic fields.
Diamagnetic substances, like copper and carbon, are weakly repelled by magnetic fields.
Antiferromagnetic materials, like chromium, have a complex relationship with magnetic fields.
Electric charge is a physical property of matter that causes objects to experience a force when placed in an electromagnetic field.
Electric charge can be positive or negative; like charges repel each other, unlike charges attract each other.
An object with no net charge is referred to as electrically neutral.
Classical electrodynamics describes early knowledge of how charged substances interact.
Electric charge is a conserved property.
In ordinary matter, negative charge is carried by electrons, and positive charge is carried by protons in the nuclei of atoms.
Charge is quantized and comes in integer multiples of the elementary charge, e.
Quarks carry smaller charges, multiples of 1/3e, but are found only combined in particles with charges that are integer multiples of e.
In the Standard Model, charge is an absolutely conserved quantum number.