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BC Science 9 Ch8/9
BC Science 9 Chapter 8/9
Question | Answer |
---|---|
Electrochemical cells connected together | Battery |
Convert chemical energy into electrical energy stored in charges | Electrochemical cells |
End points of a battery | Terminals |
Energy a moving object has | Kinetic energy |
Ability to do work | Energy |
Energy stored in an object | Potential energy |
Energy stored in a battery | Electric potential energy |
Amount of electric potential energy per coulomb of charge | Potential difference |
Potential difference | Voltage |
Unit of potential difference | Volt |
Terminals on a battery | Electrodes |
A fluid that conducts electricity | Electrolyte |
Pathway that allows electrons to flow | Electric circuit |
A device that transforms electrical energy into other forms of energy | electric load |
A wire through which electrons flow | Conductor |
A continuous flow of charge in a complete circuit | Current electricity |
Amount of charge flowing in a conductor every second | Electric current |
Unit of electric current | Ampere |
A device used to measure electric current | Ammeter |
Property that slows down the flow of electrons | Resistance |
The ratio of voltage to current | Electrical resistance |
Unit of electrical resistance | Ohm |
Mathematical relationship comparing V, I and R | Ohm's Law |
V/I | R |
IR | V |
A component with a specific resistance | Resistor |
A device that measures resistance | Ohmmeter |
Circuit with only one path | Series |
Circuit with many paths | Parallel |
Rate of change in energy | Power |
Unit for measuring energy | Joule |
One joule of energy transformed in one second | Watt |
Rate of change in electrical energy | Electrical power |
VI | P |
Energy an electrical device consumes per second | Power rating |
Pt | E |