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Ohm’s Law

Ohm’s Law. Quantities of a Circuit. Voltage. – pushes the electrons . The ends of a battery are oppositely charged. This creates a force or the prime mover , pushing the electrons through the circuit. . ,V. Volts. Voltage is measured in . . . Quantities of a Circuit. Current.

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Ohm’s Law

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  1. Ohm’s Law

  2. Quantities of a Circuit Voltage – pushes the electrons The ends of a battery are oppositely charged. This creates a force or the prime mover, pushing the electrons through the circuit. ,V Volts Voltage is measured in

  3. . Quantities of a Circuit Current – flows through circuits The flow of electronswe call current which travels through closed circuits. ,A Amperes Current is measured in

  4. Quantities of a Circuit Resistance – resists current flow Devices in the circuit do work, which slows down (restricts) current. ,Ω Ohms Resistance is measured in

  5. We will need to use our electric circuit symbols to diagram some circuits

  6. OHM’S LAW (resistance in a circuit) "For a given resistor at a particular temperature, the current is directly proportional to the applied voltage." Georg Simon Ohm(1787-1854) V = I R Units: Volt/Amperes = ohm(Ω)

  7. Example 1: The voltage of an electric heater is 80 V when there is a current of 6 A in the heater. What is the resistance of the heater? Givens: V1 = 80 V I = 6 A R = ? = 13.3 Ω B. What is the current if the voltage is increased to 120V? Givens: V2 = 120 V R = 13.3 Ω I = ? = 9 A

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