Electricity, Magnetism, AC/DC Circuits

Review

Vectors & Vector Addition

Charge Density

$\rho = m/V = kg/m^3$

$\sigma = m/A = kg/m^2$

$\lambda = m/L = kg/m$

we can modify the equations so that mass ($m$) is Coulombs ($C$)

UNIT 1

You should know:

• Memorize the meanings of the common metric prefixes (p, n, µ, m, c, k, M) -The steps outlined in the problem solving guide.
• The meanings of key terms.
• The electron/proton model of electric charge, and how it explains the behavior of electric charges qualitatively.
• How to use Coulomb’s Law to calculate electric forces and field between point charges, including groups of many point charges.
• How to find the electric force or field created by a continuous charge distribution using integration.
• The meaning of the electric field.
• The meaning of the electric dipole moment and how it can be used to calculate fields, torques, and potential energies.
• How to calculate electric flux through a surface.
• How to use Gauss’ Law to determine the electric field in situations with strong symmetry.
• The arrangement of charges and fields on/near conductors.

UNIT 2

You should know:

• Memorize the meanings of the common metric prefixes (p, n, μ, m, c, k, M)
  • p,
  • n,
  • μ,
  • m,
  • c,
  • k,
  • M,
• The steps outlined in the problem solving guides.
• The meanings of key terms.
• What a capacitor is and the definition of capacitance.
  • capacitor
  • capacitance
• The properties of a parallel plate capacitor, including the relationships between the dimensions of the capacitor, capacitance, potential difference, and electric field.

• How capacitors behave in series and parallel.

• The energy stored in a capacitor/electric field.
• How dielectrics work and how they affect capacitance.
• The definitions of current density and current.
• The definitions and relations between resistance and resistivity, and how these quantities are related to Ohm’s Law.
• How to draw and interpret circuit diagrams.
• How energy and power are transferred in electric circuits.
• How resistors behave in series and parallel.
• How to analyze DC circuit behavior conceptually.
• How to use Kirchoff’s laws to analyze circuits.
• The rules, concepts, and mathematics governing RC circuits (charging and discharging).

While the target of the test is chapter 23-26 material, since the material is cumulative, you should also know the following material from previous sections:

• The electron/proton model of electric charge, and how it explains the behavior of electric charges qualitatively.
• How to use Coulomb’s Law to calculate electric forces and field between point charges, including groups of many point charges.

• How to find the electric force or field created by a continuous charge distribution using integration.

• The meaning of the electric field
  • represented by electric field lines, which is a representation of forces applied by the interaction of charges