Electricity and Magnetism

Mind Map by jlgale2016, updated more than 1 year ago
Created by jlgale2016 over 5 years ago


KS3 Sciences (Physics) Mind Map on Electricity and Magnetism, created by jlgale2016 on 05/14/2016.

Resource summary

Electricity and Magnetism
  1. Objects can be charged positively or negatively by transforming electrons.
    1. Like charges repel and unlike charges attract.
      1. An electric field is a region where there is a force on charged particles or materials.
        1. Electric current is the amount of charge flowing per second. You measure current in amps (A) using an ammeter.
          1. The potential difference of a cell tells you the size of the push on the charges and how much energy can be transferred by them.
            1. You measure potential difference in volts (V) using a voltmeter. The rating of a cell or battery tells you the potential difference at which it operates.
              1. Series circuits contain only one loop, and the current is the same everywhere. Parallel circuits have branches and the currents in all the branches add up to the total current.
                1. A component with a high resistance has a small current through it. Resistance is measured in ohms(__) You calculate the resistance using potential difference across a component and the current through it. Insulators have a very high resistance and conductors have a very low resistance.
                  1. Magnets have a north pole and a south pole. Like poles repel and unlike poles attract.
                    1. Magnetic materials feel a force in the region around a magnet called a magnetic field.
                      1. A current flowing in a coil of wire wrapped around a magnetic material is an electromagnet. It behaves like a bar magnet, but you can turn it on and off.
                        1. Electromagnets are used in maglev trains, hospitals and cars.
                          Show full summary Hide full summary


                          AQA Physics P1 Quiz
                          Bella Statham
                          GCSE AQA Physics - Unit 3
                          James Jolliffe
                          Using GoConqr to study science
                          Sarah Egan
                          GCSE AQA Physics 1 Energy & Efficiency
                          Lilac Potato
                          Forces and their effects
                          Junior Cert Physics formulas
                          Sarah Egan
                          Forces and motion
                          Catarina Borges
                          OCR Physics P4 Revision
                          Dan Allibone
                          P2 Radioactivity and Stars
                          Physics P1