{"id":118,"date":"2016-10-27T08:17:30","date_gmt":"2016-10-27T08:17:30","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphys\/?page_id=118"},"modified":"2017-01-06T15:31:02","modified_gmt":"2017-01-06T15:31:02","slug":"2-2-forces-on-charged-particles","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecphys\/2-2-forces-on-charged-particles\/","title":{"rendered":"2.2 Forces on Charged Particles"},"content":{"rendered":"

Introduction<\/strong><\/p>\n

You may wonder why it is important to study charged particles?\u00a0 What use are they to us in everyday life? Well, without charged particles we wouldn\u2019t have an electric current \u2013 unthinkable in our technological age. But there are more applications you may not have thought of. Laser printers and photocopiers use charged particles to get the toner to stick to the paper and car companies use charged particles to ensure that spray guns paint cars evenly. The Large Hadron Collider accelerates positively charged protons to 99% the speed of light, then collides them head on to try and recreate the conditions that existed when the Universe was 1\/100th<\/sup> of a billionth of a second old. Scientists then study these collisions to try and explain what mass is and what 96% of the universe is made of.<\/p>\n

In this section we will study how charged particles move in electric and magnetic fields. We will then study the different types of particle accelerator and their applications.<\/p>\n

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Force Fields<\/strong><\/p>\n

The idea of a field should be familiar to you. In Physics, a field means a region where an object experiences a force without being touched. For example, there is a gravitational field around the Earth. This attracts masses towards the Earth\u2019s centre. Magnets cause magnetic fields and electric charges have electric fields around them. \u00a0\u00a0\u00a0<\/strong><\/p>\n

\"2-2-002\"<\/a><\/p>\n

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Electric Fields<\/strong><\/p>\n

In an electric field, a charged particle will experience a force.<\/strong> We use lines of force to show the strength and direction of the force. The closer the field lines the stronger the force. Field lines are continuous they start on positive charge and finish on negative charge. The direction is taken as the same as the force on a positive <\/em><\/strong>\u201ctest\u201d charge placed in the field.<\/p>\n

Electric fields have a number of applications and play an important role in everyday life. For example,<\/p>\n