Chapter 11 glossary terms gr. 9 science Ms Day
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- A closed path where electrons that are power by an energy source can flow.
- ex. any sort of electrically powered appliance needs an electrical circuit to function.
- Related terms-Circuit diagram
- A source of energy that produces electrical current by chemical reactions involving two different metals or metal compounds , separated by a solution that is a conductor.
- Related terms-Battery, wet cell, dry cell
- A connection of at least two cells.
- ex. Duracell makes batteries
- related terms- voltaic cell, wet cell, dry cell, electrode
- One of the two metal terminals in a cell or battery.
- ex. A cell has negative and positive electrodes
- Related terms- Electrolyte, Cell
- A cell that contains an electrode that is a paste.
- Related terms- Wet cell, Cell
- A cell that contains a liquid electrode.
- Related terms- Dry cell, Cell
- A cell that can only be used once.
- ex. Non-rechargeable batteries are primary cells.
- related terms- Secondary cell
- A cell that can be recharged and used more thn once.
- ex. Cells used in controllers can often be recharged and used again
- Related terms- Primary cell, fuel cell, solar cell
- A cell that generates electricity through chemical reactions of fuel that is stored outside of the cell
- Related terms- Solar cell, Secondary cell, cell
- A cell that converts the suns sunlight into electrical energy
- ex. A solar panel
- Related terms- Secondary cell, cell
- A position on a cell that must be connected to other components in order to form a circuit.
- ex. A cell has a negative and positive terminal.
- A device that can complete or break a circuit, completing it or not completing it.
- ex. A power button on a flashlight is a switch.
- Related terms- Open circuit, Closed circuit
- A circuit that contains a gap or break. Nothing works in an open circuit.
- ex. When a light is turned off, its an open circuit.
- Related terms- Electric circuit, Closed circuit
- A measure of the amount of charged particles pass by a certain spot in an electric circuit each second
- ex. Electric current passes through a closed circuit
- Related terms- Electric circuit
- A quantity of charge that is equal to 6.25x10 to the power of 18 electrons
- ex. One coulomb of charge passes by a circuit per second
- The unit of electric charge equivalent to one coulomb per second.
- ex. One ampere of charge passes by a circuit
- The property of a substance that hinders electric current, and then converts this electrical energy into other forms of energy.
- ex. An electrical stove has a high electrical resistance
- Related terms- Resistor, load
- A device that is used in an electric circuit to decrease the current through a component by a specific amount
- ex. A stove is a resistor
- Related terms- electrical resistance, load
- A device, usually a resistor, that transforms electrical energy into heat, motion sound or light
- ex. A stove is a load
- Related terms- Resistor, Electrical resistance
Potential Difference (voltage)
- The difference in electrical energy between two points in a circuit.
- ex. This battery has a potential difference of 5V
- Related terms-Volt
- The unit used for potential difference, equal to one joule (J) per coulomb (C).
- ex. The potential difference of of this battery is 5V
- Related terms-Potential difference
- A diagram that uses standardized symbols to represent the components in an electric circuit and their connections o each other.
- Related terms- Series circuit, Parallel circuit, electric circuit
- A circuit where there is only one path in which the electrons can flow through.
- ex. This circuit is series, as there is only one path in which the electrons can flow through.
- Related terms-parallel circuit, circuit diagram, electric circuit
- A circuit where there is more than one path n which the electrons can flow through.
- ex. This circuit is a parallel circuit because there is more than one path in which the electrons can flow down.
- Related Terms- Series circuit, Circuit diagram, electric circuit
- The ratio of potential difference to current is a constant called resistance.
- Related terms-Ohms
- A material where there is no resistance. The electric charge can flow with no resistance.
- ex. very cold mercury is a superconductor
- related terms-Resistance, Resistor
- Does not follow ohms law.
- Related terms- Ohm's law, Ohm
Loads in Series
- Loads on a series circuit.
- Related terms- Loads in parallel, Series circuit
Loads in Parallel
- Loads on a parallel circuit.
- Related terms- Loads in series, parallel circuit
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