Electromagnetism![]() See magnetism first!
Electrons, protons, ions, alpha particles and beta particles are all charged. When stationary they have no magnetc field around them, but when they move they have! Wow! It also follows that all electrical wires have a magnetic field around them (but only when the current flows). How to draw a representation of a current carrying wireThe field lines form a concentric circle pattern around the wire. The symbol for the current carrying wire itself is a section through the wire (as shown below). The field lines are then drawn around it.
The Right Hand Grip RuleThe direction of the field lines can be found using the right hand grip rule. You must know this at GCSE level (and at A level of course!)
Click here to find out about solenoids Click here to find out about an experiment to investigate electromagnetism |
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