Physics 105

  1. velocity
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    • distance travelled divided by time of travel
  2. Fundamental SI units
    • Length      Mass             Time          
    • meter (m) kilogram (kg) second (s)

    Electric Current: ampere (A)
  3. Electric Charge
    measured in coulombs, C

    1C = 1 A⋅s
  4. Kinetic Energy (KE)
    energy of motion
  5. Potential Energy (PE)
    stored energy that can be converted to kinetic energy

    ΔPEgrav=ΔKE
  6. charge
    q or Q
  7. Electric Potential

    or

    Potential
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    • measured in volts, V
    • 1V = 1 J/C
  8. Potential Difference
    Voltage

    difference in potential between 2 points

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  9. Current   (I)
    flow of charge

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    measured in ampere, A

    1A = 1 C/s
  10. Circuit
    closed loop that current can flow around
  11. Ohm's Law
    current is proprtional to voltage

    V = IR

    V=Voltage, I=current, R=resistance
  12. Resistance   (R)
    Measured in ohm, Ω

    1Ω = 1 V/A

    smaller the resistance, more easily current flows
  13. Resistivity (R)
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    measured in Ω⋅m

    changes with temperature
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    • p(T) = resistivity at temperature T
    • p0 = resistivity at some reference temperature, T0 (usually 20 °C)
    • α is the temperature coefficient of resistivity, usually has units of (°C)-1
  15. Power
    the rate at which energy is transferred

    1W = 1 J/s
  16. Power (P)
    Image Upload 7       P = IV

    P = I2R     Image Upload 8
Author
ufvlu
ID
313996
Card Set
Physics 105
Description
1.2: Physical Quantities and Units 1.3: Accuracy, Precision and Sig Figs 18.1: Electric Charge 19.1: Electric Potential Energy: Potential Difference
Updated