O GoConqr está de visual novo! Conte para nós o que você achou.

Registre-se grátis

Flashcards

Electricity

hiphop4hope Science Inglês 36 flashcards

Flashcards do conjunto (36)

  1. 1What is electricity?Electricity describes all the phenomena caused by positive and negative charges. It is the main form of energy that we use in our everyday lives.
  2. 2How was electricity discovered?Electricity was discovered when amber rubbed against wool
  3. 3What is electrical charge?Electrical charge is a property of protons and electrons. (q)
  4. 4What is the unit of measurement for electrical charge?Coulomb (C)
  5. 5What is the force at work called in the attraction or repulsion between charges?Electrical force
  6. 6What does charging of an object consist of?Charging an object consists of creating an imbalance in the electrical charge of that object.
  7. 7What are the categories of how objects react upon receiving electrical charges?Conductors, Insulators, Semi-conductors
  8. 8What is an electrical field?An electrical field is the area of space in which the electrical force of a charged body can act on another charged body.
  9. 9What is static electricity?Static electricity describes all the phenomena related to electrical charges at rest.
  10. 10When two objects of the same charges come together, the quickly lose their charge, usually accompanied by a spark. What is this called?Electrostatic discharge
  11. 11How can objects be charged?Objects can be charged by friction, conduction or induction.
  12. 12What does friction consist of?Friction consists of rubbing two neutral bodies together, resulting with two bodies of opposite charges.
  13. 13What does conduction consist of?Conduction consists of an object being charged from another object that has already been charged.
  14. 14What does induction consist of?Induction consists of when an electrically charged object approaches a neutral object (without the need to touch it)
  15. 15What does Coulomb's law describe?Coulomb's law describes the magnitude of the force between two electrically charged particles.
  16. 16What is the equation for Coulomb's law?F= k q1 q2 / (r)2
    Where F=Force (N)
    k= Coulomb constant [ 9x(10)9 Nm2 / C2 ]
    q1 & q2= charges (C)
    r= distance between charges (m)
  17. 17What does dynamic electricity describe?Dynamic electricity describes all the phenomena related to electrical charges in motion.
  18. 18In an electrical circuit, what is the direction of particles?Positive particles to negative particles.
  19. 19What are generators?Generators transform mechanical energy into electricity.
  20. 20What do all circuits contain?All circuits contain a power supply to create potential difference and one or more elements that use electrical energy (when 2 or more elements, they can be set up in series or parallel circuits)
  21. 21How can we tell between series and parallel circuits?We can tell by the paths- in a series circuit, the current follows one path and in a parallel circuit, the current follows different paths
  22. 22If one lightbulb goes out, which circuit's current with continue to flow?The parallel circuit.
  23. 23What is current intensity?Current intensity is the number of charges that flow past a given point in an electrical circuit every second.
  24. 24How is current intensity measured and using what unit of measurement?Current intensity (I) is measured using ammeters and measured in amps (A)
  25. 25Which side is the ammeter located?The positive side
  26. 26In a series circuit, is the current intensity (I) the same or shared? And for a parallel circuit?Series circuit- current intensity is the SAME
    Parallel circuit- current intensity is SHARED
  27. 27How can current intensity be calculated?I= q /
  28. 28What is potential difference?Potential difference is the amount of energy transferred between two points in an electrical circuit. (V)
  29. 29How is potential difference measured and using what unit of measurement?Potential difference is measured with a voltmeter that can be installed on either side of the circuit. It's unit is volt (V)
  30. 30What is the equation that determines the potential difference between two points?V= E / q
    Where V=voltage (volts V)
    E= energy transferred (joules J)
    q= charge (coulombs C)
  31. 31What do resistors do in a circuit?Resistors can change electrical energy into another form Ex/into thermal energy
  32. 32What is the unit of measurement for resistance? What is the equation of resistance?Ohms (omega sign).
    1(omega)= 1V/ 1A
    Where omega= ohm
    V=volt
    A= amps
  33. 33What is Ohm's Law?Ohm's Law: V=RI
    Where V=potential difference (volts)
    R=Resistance (ohms)
    I=Current intensity (amps)
  34. 34What does electrical power indicate? What is the unit of measurement?Electrical power indicates the amount of work a device can do in a certain period of time. It's unit of measurement is watts (W) & Kilowatt hours (kWh)
  35. 35What is equivalent to one watt?1 W= 1J / 1s
    Where W=watt
    J=joule
    s=second
  36. 36What is the equation for electrical power?Pe= W /

Informações

Descrição
Science (Electricity and Magnetism) FlashCards sobre Electricity, criado por hiphop4hope em 14-06-2015.
Criado por
hiphop4hope
Visualizações
10
Avaliação

Fale Conosco

Sobre o que é sua mensagem?

O que você acha do novo visual?

Você gostou?