Big ideas1. Electrical charge is a property of matter. Electrons can be transferred from one place to another, but cannot be created or destroyed. 2. Electricity is one of the most common means by which we transfer energy; the electrical current (moving charges) brings us energy from power plants when there is a complete (closed) circuit from the power plants to our homes or to industries. 3. In a closed circuit, potential difference, current, and resistance are related; a change in any part of the circuit affects all other parts (almost) instantaneously. By using various electrical components in different arrangements, we are able to set up practical circuits to serve specific purposes. 4. Naturally occurring magnets, as well as man-made magnets, interact with other magnets or magnetic materials. A freely suspended magnet comes to rest pointing in the N-S direction due to its interaction with the Earth’s magnetic field. 5. Electricity and magnetism are related effects that have many applications in everyday life: moving charges (electric current) create magnetic fields; varying magnetic fields create electric fields (electromagnetic induction). 6. complex systems may also be better characterised by statistical averages (e.g. drift velocity, temperature) as these quantities may be more meaningful than the properties and behaviours of individual components (e.g. electron movement in a wire resulting in the current).
Resources from http://mptl.eu/ adapted from E. Debowska University of Wroclaw (PL) R. Girwidz Ludwig-Maximilians-Universität München (DE) T. Greczylo University of Wroclaw (PL) A. Kohnle University of St. Andrews (UK) B. Mason University of Oklahoma (US) L. Mathelitsch University of Graz (AT) T. Melder University of Louisiana, Monroe (US) M. Michelini University of Udine (IT) I. Ruddock University of Strathclyde (UK) J. Silva Escola Secundária Henrique Medina (PT)
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