AP Physics 1: Review of Electrostatics

The video reviews electrostatics topics for the AP Physics 1 exam, covering elementary charge, the law of charges, Coulomb's law, and charge conservation. It explains the concept of elementary charge, discusses protons, electrons, and quarks, and compares Coulomb's law with Newton's law of gravitation. The video concludes with a discussion on charge conservation in isolated systems and introduces the next lesson on electricity.

What is the elementary charge and which particles have this charge?

• 1.6 x 10^-19 coulombs; protons and electrons

• 1.6 x 10^-18 coulombs; electrons and quarks

• 1.6 x 10^-19 coulombs; neutrons and electrons

• 1.6 x 10^-18 coulombs; protons and neutrons

Which statement correctly describes the law of charges?

• All charges attract each other

• Unlike charges attract, like charges repel

• All charges repel each other

• Like charges attract, unlike charges repel

What is the value of Coulomb's constant?

• 9.81 m/s²

• 1.6 x 10^-19 C

• 6.67 x 10^-11 N m²/kg²

• 8.99 x 10^9 N m²/C²

How does Coulomb's law compare to Newton's universal law of gravitation?

• Coulomb's law is weaker than Newton's law

• Both laws use mass instead of charge

• Coulomb's law uses charge, while Newton's law uses mass

• Both laws use the same constant

What happens to the net charge when two electrically isolated spheres are touched and then separated?

• The net charge is halved

• The net charge is doubled

• The net charge becomes zero

• The net charge is conserved

How many excess protons are on each sphere if the net charge is 1 coulomb?

• 9.81 x 10^18 protons

• 3.12 x 10^18 protons

• 1.6 x 10^-19 protons

• 6.24 x 10^18 protons

What is the next topic after the review of electrostatics?

• Magnetism

• Optics

• Electricity

• Thermodynamics