CHAPTER 23 MIND MAP Series calculation and set-up Ammeter
Galvanometer Multimeter
Measuring current
Types of circuit
Effects of current
Chemical
demonstration experiment
Heating demonstration experiment
Formula CURRENT
Mandatory experiment
Mandatory experiment
Metallic conductor
Different conductor I–V graphs
Gas Vacuum
Filament bulb
Semiconductor
Electrolyte solution
CHAPTER 23 CHECKLIST Definitions: electric current
Formulae: Joule’s law: P = I2R Charge: Q = I t Energy converted: W = I2R t
Section B experiments: To demonstrate heating effect To demonstrate chemical effect To demonstrate magnetic effect
Mandatory experiments:
Verification of Joule’s law To investigate the variation of current (I) with pd (V) for a metallic conductor To investigate the variation of current (I) with pd (V) for a filament bulb To investigate the variation of current (I) with pd (V) for copper sulphate solution with copper electrodes
Laws: Joule’s law
STS: effects of current in terms of heating, magnetic interference and electroplating; conventional current direction versus real current direction
263 BOOK TITLE LEAVING CERTIFICATE PHYSICS 263 Scientists: Joule