Term
|
Definition
| a device used to mesure electrical current |
|
|
Term
|
Definition
| a collection of more then one cell conected together |
|
|
Term
|
Definition
| a measure of the amount of electrical energy that a cell or battery can hold |
|
|
Term
|
Definition
| an electrical component used to create a voltage |
|
|
Term
|
Definition
| a collection of electrical divices connected together to perform some function |
|
|
Term
|
Definition
| the description of the flow of electrical current that goes from positive to negative terminals around a curcuit |
|
|
Term
|
Definition
| the flow of electricity around a circuit. measured in amperes, or amps (A), or milliamps,(mA) |
|
|
Term
|
Definition
| the most common type of cell. the voltage is produced by chemical reactions that normally take place in a metal cylinder |
|
|
Term
|
Definition
| a device used to generate electricity by rotating a magnet inside a coil of wire |
|
|
Term
|
Definition
| a magnet that is created by the flow of energy through a wire |
|
|
Term
| electromagenetic induction |
|
Definition
| the process that happens when a magnet is moved near a wire that induces a voltage making a current flow |
|
|
Term
|
Definition
| a very small negative particle that flows around an electric cuircuit creating an electrical current |
|
|
Term
| light-dependant resisitor (LDR) |
|
Definition
| a resistor whose resistance changes with light intensity |
|
|
Term
|
Definition
| any object that has a magnetic field around it |
|
|
Term
|
Definition
| the area around a magnetic object where other magnetic objects will feel force |
|
|
Term
|
Definition
| a type of cell or battery that it is possible to use many times. after its electrical energy has been used it can be 'refilled' with electrical energy and used again and again |
|
|
Term
|
Definition
| a measure of how difficult it is for current to flow around a circuit. measured in ohms |
|
|
Term
|
Definition
| an electrical component that restricts the flow of electrical current. fixed-value resistors do not change their resistance, but with variable resistors it is possible to vary the resistance |
|
|
Term
|
Definition
| a type of circuit where all the components are connected together in a single line or in a loop |
|
|
Term
|
Definition
| something that converts solar power into electricity, also known as a photovolatic cell |
|
|
Term
|
Definition
| a material that has an extremely low resistance and so conducts electricity incredibly well |
|
|
Term
|
Definition
| a resistor whose resistance changes with temperature |
|
|
Term
|
Definition
| the difference in electrical energy between two points that makes a current flow, measured in volts (V), or millivolts (mV). it is sometimes called potential difference. |
|
|
