Understand Physics gives you a solid understanding of the key skills and ideas that run through the subject. You will explore the important concepts of force and motion, electricity, light, molecules, matter and space and discover the frontiers of physics. With numerous questions, answers and worked examples throughout, you will feel confident in approaching the science and applying your knowledge. NOT GOT MUCH TIME? One, five and ten-minute introductions to key principles to get you started. AUTHOR INSIGHTS Lots of instant help with common problems and quick tips for success, based on the author's many years of experience. TEST YOURSELF Tests in the book and online to keep track of your progress. EXTEND YOUR KNOWLEDGE Extra online articles at www.teachyourself.com to give you a richer understanding of physics. FIVE THINGS TO REMEMBER Quick refreshers to help you remember the key facts. TRY THIS Innovative exercises illustrate what you've learnt and how to use it.A diode conducts when it is connected into the circuit in its forward direction, as its resistance in the forward direction is very low. ... A lightemitting diode (LED) emits light when current passes through it. LEDs are used ... For example, an electrickettle that operates at a voltage of 230 volts and a current of 10 amperes would take 2300 watts of power (= 230 volts A 10 amperes) from the ... 5 (a) Draw a circuit diagram to show a diode connected in series with a 1.5 V cell and a lit torch bulb.
|Title||:||Understand Physics: Teach Yourself|
|Publisher||:||Hachette UK - 2010-02-26|