| A | B |
| One volt equals | one Joule/1 Coulomb |
| Electroscope | An instrument that detects charge |
| Elementary charges | smallest charges known to exist in nature |
| Conduction | Process of charging an object by transferring electrons during contact with a charged object. |
| Induction | Process of charging an object in which a neutral object is attracted to an nearby charged object |
| Power | Rate of doing work. Unit is the Watt |
| The Watt (W) is equal to | 1 Joule/1 second |
| Flow of electron in a wire. | Current,(I) unit is the Ampere(A). |
| 1 Ampere(A) is equal to | 1Coulomb/ 1 second |
| Ohms's law | V=IR |
| Unit of resistance | Ohm |
| Unit of potential difference | Volts(V) |
| Kirchoff's first rule | For any point in a circuit, the total current arriving at the point must equal the total current leaving it. |
| Kirchoff's second rule | The algebraic sum of all the voltage drops and applied voltages around a complete circuit is equal to zero. |
| Series circuit | There is only one current path |
| Parallel circuit | Each component has its own current path |
| In a series circuit current(I): | Itotal=I1=I2... |
| In a parallel circuit(I) | Itotal=I1+I2+I3... |
| Magnetic Flux lines | Imaginary lines of force mapping a magnetic field |
| Permeability | Capacity to change the flux density of a magnetic field |