Multiple choice questions section A of ur unit 4 exam 2.5 / 5 based on 2 ratings ? PhysicsA2/A-levelAQA Created by: Paul OrjiCreated on: 11-12-12 10:36 Electrons are responsible for what? Charging/discharging in most situations 1 of 15 Electrical conductors contains what? Lots of free electrons 2 of 15 Insulating materials contains what? Electrons that are attached to individual atoms 3 of 15 What does any two charged objects do? Exert equal and oppostie forces on each other without being directly in contact 4 of 15 What surrounds a charge? An electric field 5 of 15 What is line of force or field line? It is the path that a free postive test charge follows 6 of 15 Where is a field line strongest? Where the lines are most concentrated 7 of 15 At what angle do a field line hit any plate? 90 degrees 8 of 15 Between two oppositively charges plates, what are the field lines said to be? Parallel, therefore making the field uniform 9 of 15 A force acts on an object, when does this happen? When the objest is charged 10 of 15 What is electric field strength? It is the force per unit charge on a postive test charge at that point. 11 of 15 What is the unit of electric field strength? Newtons per colomb 12 of 15 What is the equation to work out electric field strenght? E=F/Q 13 of 15 Name a few properties of an electric field electric fields strenght are vectors and travel in the same direction as the force on the postive test charge. 14 of 15 The force on a small charge is? in the opposite direction to the electric field if the charge is negative. 15 of 15
Sheets for Edexcel 2015 New Spec Physics 16 Core Practicals 5.0 / 5 based on 1 rating Teacher recommended
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