Physics 3 0.0 / 5 ? PhysicsGCSEAQA Created by: kaitlynCreated on: 20-05-13 14:51 whhich type of lens does a magnifying glass use? converging lens. 1 of 17 name the components of the eye? cornea, pupil, retina, iris, lens & cilianary muscle. 2 of 17 what is a moment? the turning effect of a force. 3 of 17 what objects are most stable? low & wide objects. 4 of 17 how do hydraulics work? they use a small force to produce a bigger force using pressure in a liquid. 5 of 17 what is velocity? velocity is speed in a known direction. 6 of 17 what does centipetal force depend on? mass, speed and radius. 7 of 17 what is a magnetic field? a magnetic field is a region where magnetic materials (iron & steel) and also wires carrying currents experience a force acting on them. 8 of 17 what is flemings left hand rule? for motors. first finger = field, thumb = motion, second finger = current. 9 of 17 what is the current through a coil in transformers? A.C. - alternating current 10 of 17 what is the rhyme to remember flemings rules? LEMON RUG. 11 of 17 what is electromagnetic induction? the creation of potential difference across a conductor which is experiencing a change in magnetic field. 12 of 17 how efficient are transformers? nearly 100% 13 of 17 how is short sightedness corrected? diverging lens 14 of 17 how is long sightedness corrected? converging lens 15 of 17 what is the far point in the eye? the furthest distance that the eye can focus comfortably. 16 of 17 total clockwise moment equals? the total anticlockwise moments. 17 of 17
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