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LADWP Electrical Mechanic Test: Key Formulas and Safety Procedures Exam Review | Questions, Answers & Explanations | 2026/2027

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LADWP Electrical Mechanic Test: Key Formulas and Safety Procedures Exam Review | Questions, Answers & Explanations | 2026/2027

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LADWP Electrical Mechanic Test: Key Formulas
and Safety Procedures Exam Review |
Questions, Answers & Explanations |
2026/2027

Ohm's Law - correct answer-V = I × R — Voltage equals current times resistance.

Formula for electrical power in watts - correct answer-P = V × I

Formula for power using resistance - correct answer-P = I² × R or P = V² / R

Total resistance in a series circuit - correct answer-R_T = R1 + R2 + R3 + ...

Total resistance in a parallel circuit - correct answer-1 / R_T = 1 / R1 + 1 / R2 + ...

Line vs phase voltage in a balanced 3-phase Wye system - correct answer-V_L =
√3 × V_phase

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