[02] Electromagnetism

Question 1

What does Electromagnetism study?

Answer 1

Electric, magnetic, and electromagnetic fields and their interactions

Question 2

List the main topics of study in Electromagnetism

Answer 2

• Coulomb’s law
• Electric fields and potential
• Magnetic fields
• Ampere’s law
• Maxwell’s equations

Question 3

What is Coulomb’s law?

Answer 3

It describes the force between two charged particles: directly proportional to the product of their charges and inversely proportional to the square of the distance between them

Question 4

What are electric fields and potential?

Answer 4

• Electric field → a field around a charged particle, which exerts force on other charged particles
• Electric potential → the work done per unit charge in bringing a positive test charge from infinity to a particular point in the field

Question 5

What are magnetic fields?

Answer 5

Fields produced by magnetic dipoles or changing electric fields

Question 6

What is Ampere’s law?

Answer 6

It relates the integrated magnetic field around a closed loop to the electric current passing through the loop

Question 7

What are Maxwell’s equations?

Answer 7

Four differential equations that form the foundation of classical electrodynamics, optics, and electric circuits, also playing a fundamental role in modern physics