Please wait - loading…

Physics- Electricity

Description

physics gcse
Francesca Weiner
Mind Map by Francesca Weiner, updated more than 1 year ago
Francesca Weiner
Created by Francesca Weiner over 6 years ago
40
2

Resource summary

Physics- Electricity
  1. Resistance
    1. Whatever opposes the flow of charge. Measured in ohms
      1. Resistance+ Current around circuit -
        1. Length of wire- longer wire means more resistance
          1. thickness- thicker wire means more resistance
            1. Material
            2. Potential Difference
              1. Sometimes called voltage, as it is measured in Volts (V) ,with a voltmeter
                1. The p.d across a cell is called the electromotive force (emf). It tells us how strong a cell is.
                  1. P.d Problems
                    1. Sum of p.d across a cell in series must equal sum of p.d across other components in the loop
                      1. V1=V2+V3
                      2. Sum of p.d in branch of parallel circuit equals sum of p.d across any other parallel branch
                        1. V1=V2=V3
                    Show full summary Hide full summary

                    Similar

                    Renewable Energy Sources
                    darkangelforgiven
                    Electricity
                    ShreyaDas
                    GCSE AQA Physics - Unit 3
                    James Jolliffe
                    GCSE AQA Physics 1 Energy & Efficiency
                    Lilac Potato
                    P2 Radioactivity and Stars
                    dfreeman
                    Physics 1A - Energy
                    Zaki Rizvi
                    Physics: Energy resources and energy transfer
                    katgads
                    P2a revision (part 1)
                    juliasutton
                    P2a (part 2)
                    juliasutton
                    P3 Medical Applications of Physics
                    dfreeman