Electricity

    Cards (37)

    • What symbol is this?
      Open Switch
    • What symbol is this?
      Closed Switch
    • What symbol is this?
      Lamp
    • What symbol is this?
      Voltmeter
    • What symbol is this?
      Ammeter
    • What symbol is this?
      Resistor
    • What symbol is this?
      LDR
    • What symbol is this?
      Thermistor
    • What symbol is this?
      Variable-Resistor
    • What Symbol is this?
      Diode
    • What Symbol is this?
      LED
    • What symbol is this?
      Fuse
    • What symbol is this?
      Cell
    • What symbol is this?
      Battery
    • Current is the flow of electricity.
    • Potential difference is the difference between two points of energy on a circuit.
    • Resistance is the opposition to the flow of current.
    • A switch is used to turn a circuit on or off.
    • A resistor limits the current within a circuit.
    • A variable resistor is a resistor that allows the resistance to be changed.
    • Thermistor's resistance decreases as temperature increases.
    • An LDR's resistance decreases as temperature increases.
    • Diodes allow current to flow in one direction only.
    • Charge is the rate that current travels.
    • Resistance in series is added together.
    • Current is the same throughout a series circuit.
    • Potential difference is shared equally amongst the components in a series circuit.
    • Potential Difference remains the same throughout a parallel circuit.
    • Current is shared equally amongst the components of a parallel circuit.
    • Alternating current regularly changes direction.
    • Direct current only flows in one direction.
    • The live wire is brown and provides 230V to households.
    • The neutral wire is blue and returns current back to the power source.
    • The earth wire is yellow and green and gives a low resistance path to the ground in the event of a fault.
    • Step Up Transformers increase the voltage and decrease the current in order to stop the loss of power through heat caused by friction.
    • Step Down Transformers lower the voltage in order to decrease potential difference as higher voltage is dangerous.
    • Resistors in parallel have a smaller resistance than the lowest value resistor.
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