PPD Exam 2024 Questions with Complete Solutions

PPD Exam 2024 Questions with Complete Solutions Energy - ANSWERSFlows through conducting materials due to a difference in electrical charge between two points in a circuit Electromotive Force - ANSWERS V - ANSWERSThe unit of electromotive force (expressed as V) or difference of electric potential between 2 points in a circuit. 1 Volt is the electric potential that drives 1 Amp of current against 1 Ohm of resistance Ampere (A) - ANSWERSThe unit of electric current (expressed as I) in a circuit. 1 Amp is equal to 1 coulomb/second Watt (W) - ANSWERSThe unit of power (expressed as W). 1 Watt is equal to 1 joule / second Ohm (Ω) - ANSWERSThe unit of electric resistance Current Formula - ANSWERS- I = V/R (Current = Voltage/Resistance) - VA = W (Voltage x Current = Power) Power Factor - ANSWERS- Power factor is a result of the current and voltage being out of phase - Ranges from 0-1 - Typical power factor for an appliance: 0.8-0.9 - Like a tax on total wattage output - W = I x V x PF GCFI - ANSWERSElectrical outlet specified for areas prone to wetness (kitchens, garages, outdoor spaces)