Electricity

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  • Created by: umar2312
  • Created on: 25-04-17 21:13
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  • Current is the flow of charge per unit time.
    • Electricity
      • The voltage of the supply is the measure of energy given to the charges in a circuit.
      • In series
        • In parallel
          • IS =I1=12
            • VS= V1+V2
              • RT-1=R1-1+R2-1
        • IS = 12+I2
          • VS=V1=V2
            • RT=R1+R2
      • A voltage divider is a device or a circuit that uses two or more resistors or a variable resistor to provide a fraction of the available voltage from the supply.
      • The symbol for power is P, it is measured in Watts (W).
      • The symbol for energy is E, it is measured in Joules (J).
      • A transistor can be used as a switch. When used as a switch, a transistor may conduct or not conduct.
        • When it conducts, a transistor is said to be ON, when not conducting, it is OFF.
        • The transistor is on, when the input voltage is greater than or equal to 0.7 V. (NPN) 2.0 for MOSFET

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