Topic 10 - Electricity and circuits

    Cards (75)

    • basic structure of an atom
      protons and neutrons in the nucleus, electrons orbiting the nucleus
    • proton charge
      +1
    • neutron charge
      0
    • electron charge
      -1
    • series circuit
      components connected in a line and have the same current flowing through them
    • parallel circuit
      components connected with different branches so current can flow through independently
    • how is a voltmeter connected

      in parallel
    • potential difference
      the energy transferred per unit charge passed
    • how is potential difference/voltage measured

      volts
    • energy transferred
      charge x voltage
    • E
      Q x V
    • how is an ammeter connected

      in series
    • how is current measured

      amps
    • electric current
      the rate of flow of charge
    • currenr in metals
      a flow of electrons
    • charge
      current x time
    • Q
      I x t
    • charge unit
      coulombs
    • closed circuit includes a source of potential difference
      there will be a current in the circuit
    • where is current conserved in a circuit
      at a junction
    • what happens if you increase resistance
      lower the current
    • potential difference/voltage
      current x resistance
    • V
      I x R
    • resistance unit
      ohms
    • cell circuit symbol
    • battery circuit symbol
    • switch circuit symbol
    • voltmeter circuit symbol
    • ammeter circuit symbol
    • fixed resistor circuit symbol
    • variable resistor circuit symbol
    • fuse circuit symbol
    • lamp circuit symbol
    • motor circuit symbol
    • diode circuit symbol
    • thermistor circuit symbol
    • LDR circuit symbol
    • LED circuit symbol
    • resistors in the same series
      increased resistance because the same current has to pass through each resistor
    • resistors in parallel
      decreases resistance because the current has several paths to flow through