# Electricity Chapter 12

 Direct Current (DC) Current from a cell in which charged particles travel in one direction in a circuitGoes from negative terminal to the positive terminal Alternating Current (AC) Moving a magnet through a coil of wire generates a current in the coilCurrent moves in one direction when a pole of a magnet is inserted into the coil and in the opposite direction when the magnet is removedElectrons move back and forth with no net dirction Transformer An electrical device that transforms the size of potential difference on an AC. Circuit Breaker A safety device that is placed in series in a circuit that leads to other appliances and outlets. Fuse A safety device that found in older buildings and appliances; like a circuit breaker leads to appliances and outlets. Electrical Power The rate at which an appliance uses electrical energyMeasured in W or KW Watt (W) Measurement for electrical power. Kilowatt (KW) Measurement for electrical power. Electrical Energy The energy that is used by an appliance at a given setting measured in KW-h.E-PxT (power multiplied by time) Kilowatt-hour Measurement for electrical energy. Energuide Lable A label that gives details about how much energy an appliance uses in one year of normal use. Smart Meter A meter that records the total electrical energy used hour by hour and sends this information to the utility company automatically. Time of Use Pricing A system of pricing in which the cost of each KW-h of energy used is different at different times of the dayBroken down into high peak and low peak times Phantom Load The electricity that is consumed by an appliance when it is turned offA big factor is clocks on devicesBest way to avoid it is to unplug the device Efficiency The ratio of useful energy output to total energy input Expressed as a %Percent Efficiency= useful energy output/ total energy input Base Load The continuous minimum demand for electrical powerOntario = 12 000 MWOntario generated by hydroelectric and nuclear Hydroelectric Power Generation Positives - environmentally friendly, economically friendly, renewable, con be turned on or off quicklyNegatives - we will run out of new locations of running water on which we can set up new power plants, we will need to rely on other types of energy to fill the demand Intermediate Load A demand for electricity that is greater than the base loadMet by burning coal and natural gass Peak Load The greatest demand for electricityMet by hydroelectric and natural gass Renewable Energy Source Energy that can be renewed in a relatively short amount of timeEg. hydroelectric Non-renewable Energy Source Energy that cannot be renewed in a relatively short amount of timeEg. fossil fuels Solar Energy Positives - 1m2 solar cell can supply (at 100% efficiency) enough power for most of the electrical devices, renewable, not hard on the environmentNegatives - most only work at 25% efficiency, not concentrated, costly Photovoltaic Effect The generation of DC when certain materials are exposed to light. Biomass Energy Positives - only returns as much carbon as was originally in the organism (neutral), results in less acid rain, no heavy metals emitted, renewableNegatives - resources to burn are not as available, costs to acess AuthorMaya_Fox ID287979 Card SetElectricity Chapter 12 DescriptionElectricity glossary terms Updated2014-11-03T16:45:22Z Show Answers