Please enable JavaScript.

Coggle requires JavaScript to display documents.

Physics paper2, Fixed resistors the provide certain ohms of resistors -…

- - - - Battery- 2 or more cells
        to provide electricity power
        
        Filament lamp- small light bulb
        
        Switch- can be closed allowing curettage to flow into the circuit or open which will disrupt the circuit
        
        Fuses - break if too much current flows through the circuit
        
        Diode-Only allows current to flow one way around a circuit
        
        light emitting diode will emit light when current flows through it
        
        LED-that emits light when current flows through in a forward direction
    - - V=IR
        potential difference = current x resistance
        
        As long as the resistance stays constant , then as we increase the (v) then the(I) will increase proportionally
      - Ammeter
        
        measure current connected in series
      - Voltmeter
        
        measures potential difference and added in parallel
      - Variable resistors
        
        modify the amount of resistance
      - Thermistor
        
        dependent on the temp
        lower temp increasing resistance whilst the hotter do the opposite
        
        car engines
        
        Light dependent
        
        dependent on the light
        
        the resistance of a light dependent resistor decreases when the light intensity increases
        
        automatic night light
        
        Resistors
    - - Each component has its own loop
        
        this is beneficial cause if something happens to 1 loop the rest will still be working
      - Volts = all of the same components
        
        Currents= this is shared
        
        the way the current spilts depends on the resistance of the individual components
        
        higher current flow throttle lowest resistance
        
        Resistance = more components in a parallel -> lower total resistance
    - - If one part is disconnected then the whole circuit will not function
        
        The total resistance = to the individual resistance of each component
        ( ammeter have rly small resistance so we don’t count them in)
        
        The current is the same everywhere in the circuit
        
        Potential difference of the battery is shared across all of the components
        
        Components with a greater resistance will always have a higher share of the voltage