Electricity Equations

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  • Electricity Equations
    • power = voltage x current
      • P = VI
    • voltage = current x resistance
      • V = IR
    • charge = current x time
      • Q = It
    • energy = voltage x charge
      • E = VQ
    • energy = current x voltage x time
      • E = IVt
    • total cost = number of units x cost per unit
    • voltage across primary coil/voltage across secondary coil = number of turns on primary coil/number of turns on secondary coil

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