physics

Card Set Information

Author:
Snoopy
ID:
262268
Filename:
physics
Updated:
2014-04-03 20:59:03
Tags:
electric
Folders:
PHYS9
Description:
this explains ch25-29
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Snoopy on FreezingBlue Flashcards. What would you like to do?


  1. Coulomb's law
    F1 on 2 =K|q1||q2|/r2


    • k= 9 * 10-9  Nm2/C2
    • q is the charges or electrons between two points

    r is the distance, not half the distance or radius


  2. resistor vs battery
    • resistor -load
    • battery- source
  3. potential energy that the charges gain in the battery is subsequently lost as they fall thru the resistor
  4. battery supplies potential difference and also energy to the circuit
  5. what is the rate at which energy is transfered
    power. J/s or W
  6. charge gains potential energy as it goes up the battery

    battery supplies energy as it lifts charge q from the negative to the positive terminal
  7. battery is the source of emf
  8. ammeter
    measures the current in a circuit element. Must be place in series
  9. power dissipated by a resistor
    P=I2R
  10. resistors in series
    group of resistors > any single resistance in a group
  11. resistors in parallel
    group of resistors < single resistance in a group
  12. what happens when the switch is close?
    closing decreases circuit resistance and thus increases current leaving the battery
  13. voltmeter
    measures the potential difference across an element. Must be place in parallel
  14. being grounded doesn't affect the circuit's behavior
  15. time constant
    Resistor * Capacitor
  16. capacitor at charge Q. This can also be a decay
    Q=Q0e-t/T 
  17. capacitor voltage decay
    ΔV= ΔV0e-t/T

What would you like to do?

Home > Flashcards > Print Preview