Everything Science Grade 12
CHAPTER 12. WAVE NATURE OF MATTER 12.3 Figure 12.2: The imageof the polio virus usinga transmission electronmicroscope. The stru ...
12.3 CHAPTER 12. WAVE NATURE OF MATTER Table 12.1: Comparisonof Light and Electron Microscopes Light microscope Electron microsc ...
CHAPTER 12. WAVE NATURE OF MATTER 12.3 Disadvantages of an Electron Micro- scope ESCFM Electron microscopes are expensive to buy ...
12.3 CHAPTER 12. WAVE NATURE OF MATTER Chapter 12 — Summary See the summary presentation ( Presentation: VPreb at http://www.eve ...
Electrodynamics 13 13.1 Introduction ESCFO In Grade 11 you learnt how a magnetic field is generated around a current carrying co ...
13.2 CHAPTER 13. ELECTRODYNAMICS If the current flowing inthe conductor were plotted as a function of theangle between the plane ...
CHAPTER 13. ELECTRODYNAMICS 13.2 Electrical generators ESCFQ AC generator ESCFR The principle of rotatinga conductor in a magnet ...
13.2 CHAPTER 13. ELECTRODYNAMICS In an AC generator the two ends of the coil areeach attached to a slip ring that makes contact ...
CHAPTER 13. ELECTRODYNAMICS 13.2 θ or time current Figure 13.5: Variation of emf in a DC generator. AC versus DC generators ESCF ...
13.2 CHAPTER 13. ELECTRODYNAMICS DEFINITION: Motor An electric motor converts electrical energy intomechanical energy. If one we ...
CHAPTER 13. ELECTRODYNAMICS 13.2 S + N magnet magnet Direction of current in the wire [THUMB] [2nd FINGER] Direction of the Lore ...
13.2 CHAPTER 13. ELECTRODYNAMICS N S brush slip ring slip ring slip ring (front view) coil magnet magnet AC source Figure 13.6: ...
CHAPTER 13. ELECTRODYNAMICS 13.2 generators of not usinga commutator, which makes them simpler, lighter, less costly, and more r ...
13.3 CHAPTER 13. ELECTRODYNAMICS Explain how a DC generator works. Drawa diagram to support your answer. Also, describe how a D ...
CHAPTER 13. ELECTRODYNAMICS 13.3 time current OR voltage Figure 13.9: Graph of current or voltage in an AC circuit. called the i ...
13.4 CHAPTER 13. ELECTRODYNAMICS 13.4 Capacitance and inductance ESCFX Capacitors and inductors are found in many circuits. Capa ...
CHAPTER 13. ELECTRODYNAMICS 13.4 typically copper wire, wrapped around a core either of air or of ferromagnetic material. Electr ...
13.4 CHAPTER 13. ELECTRODYNAMICS We are calculating inductance, so we use the equation: L = μ 0 AN^2 l The permeability is thatf ...
CHAPTER 13. ELECTRODYNAMICS 13.4 L = μ 0 AN^2 l = 4 π× 10 −^7 × 0 , 0022 × π× 20002 0 , 05 = 0,00126 H = 1,26 mH An inductor in ...
13.4 CHAPTER 13. ELECTRODYNAMICS More practice video solutions or help at http://www.everythingscience.co.za (1.) 01yt (2.) 01yu ...
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