1. UEENEEE003B Solve Problems in Single Path DC Circuits Effects of Current Flow

2. When current flows These two effects are always present: heating magnetic These effects may be present: chemical physiological 8/9/2011 Revision02 2

3. Lets talk about: cable size / insulation the cooling vanes on electric motors the fan on electric motors transformer cooling power station cooling electric soldering iron stoves 8/9/2011 Revision02 3 HEATING

4. Magnetic A magnetic field is produced in a straight conductor, when current flows. If the conductor is made into a coil an electromagnetic is formed. By controlling the current we can control the direction and strength of the magnetic field. Lets talk about: scrap metal handling solenoids motors power station, alternator field winding 8/9/2011 Revision02 4

5. Limited batteries refining metals 8/9/2011 Revision02 5 Chemical

6. 3 DIFFERENT EFFECTS Respiratory Asphyxia (can’t breathe) Ventricular Fibrillation (Heart stops pumping blood) 8/9/2011 Revision02 6 Physiological

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11. current through the brain, It stops controlling the heart. (not common)Asphyxia 0 to 10mA Pain 10 to 25mA Arm muscles contract 30mA plus The chest muscles contract 8/9/2011 Revision02 10 Different effects

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