**Ohm's Law****Voltage = Current × Resistance**

**Current = Voltage ÷ Resistance**

**Resistance = Voltage ÷ Current**

Fig. 1 Ohm’s Law diagram |

**E ÷ I = R**

**E ÷ R = I**

**I × R = E**

**Watts**Fig. 2 Watt’s Law circle |

**P ÷ E = I**

**P ÷ I = E**

**I × E = P**

__12 formulas can be formed by combining Ohm’s Law and Watt’s Law__Fig. 3 The 12 Watt’s Law formulas |

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