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OHM’s Law

OHM’s Law. Georg Ohm. Circuit boards in computers work because of the relationship between potential difference Current Resistance . Ohm’s Law. Potential Difference (V) Current (I) Resistance R Ohm’s Symbol ( Ω ). Short Circuit.

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OHM’s Law

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  1. OHM’s Law

  2. Georg Ohm • Circuit boards in computers work because of the relationship between • potential difference • Current • Resistance

  3. Ohm’s Law • Potential Difference (V) • Current (I) • Resistance R • Ohm’s Symbol (Ω)

  4. Short Circuit • Sometimes a wire’s insulation breaks down or another problem develops that allows the electrons to flow through a device along a different path • It often causes an excess of current • The device will not work • Often causes and increase in heat and fire

  5. Short Circuit • When a power line has been severed and the flow of electrons has been interrupted • If you are in contact with the wire it will transfer the electrons and can kill you • The rubber on your tires will act as an insulator and stop the flow

  6. Short Circuit • When using the sigmatron circuit boards the light will turn on and the voltage will immediately drop when a short circuit is created • If you create a circuit with no load = short circuit • You must have a load to use the electrons that are flowing

  7. Fuses and Circuit Breakers • Fuse- is a safety device in an electric circuit that has a metallic con

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