Flashcards
1. Basic Current Direct Theory
Flashcards do conjunto (26)
- 1what charge do electrons havenegative
- 2what charge do neutrons haveno charge
- 3what charge do protons havepositive
- 4what are the electrons on the outer shell calledvalence electrons
- 5what can we classify materials asconductors
insulators
semi conductors - 6define random driftwhen the free electrons in a circuit have no current associated with them
- 7directed driftfree electrons are forced in the same direction by applying electrical currents to each end of a conductor
- 8what can you say about the amount of electrons at the negative end of a batteryhas an excess of free electrons
- 9what are the two types of flowconventional flow
electron flow - 10define electron flowthe flow of electrons in a circuit
- 11define conventional current flowthe way we map the current on an electrical circuit diagram (negative to positive)
- 12define a coulombquantity of electrons
- 13define an Amperecoulombs per second
- 14define EMFforce or pressure that sets electrons in motion
- 15define voltagethe measure of EMF or Potential difference
- 16what do we use to measure currentan ammeter
- 17what is used to measure voltagea voltmeter
- 18how should a voltmeter be installedin parrallel
- 19what three factors determine the resistance of a materialspecific resistance
length
cross sectional area - 20when finding the total resistance in a series circuit you..add the resistance of each
- 21to find the resistance of a circuit in parallel you..1/rt= 1/r1 + 1/R2 + 1/r3
- 22what is ohms lawV=IR
- 23What is kirchoffs lawcurrent in = current out
- 24what is the equation of powerP=IV
- 25what is the equation that involves the wheatstone bridgeRx x R2 = R1 x R3
- 26—
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- AGK (Electrics) FlashCards sobre 1. Basic Current Direct Theory, criado por Ella Davies em 04-03-2018.
- Criado por
- Ella Davies
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