| A | B |
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| Electric Fields | Generated by electrically charged particles and time varying magnetic fields |
| Magnetic Fields | The area around a magnet where its magnetic force is connected by other magnetic objects. |
| Magnetic Domain | Small regions in magnets within which atomic or molecular magnetic moments are aligned parallel. |
| Magnetic Poles | Two regions in a magnet where the magnetic induction is concentrated. |
| Direct Current | An electrical current which always flows in one direction. |
| Alternating Current | The electric current that changes its direction periodically. |
| Electromagnet | A magnet by the passage of electric current through a coil surrounding it. |
| Electromagnetic induction | The production of a difference across a conductor when it is exposed to a magnetic field. |
| Transformers | an apparatus for reducing or increasing the voltage of an alternating current. |
| Commutator | A motor or a generator, that the electrical connection is made and which makes sure the current flows as direct current. |
| Equivalent Resistance | A resistance that represents the total values of a circuit component or group of circuit components. |
| Current | - A flow of electricity through a conductor. |
| Voltage | An electromotive force or potential difference expressed in volts. |
| Resistance | The property to oppose the flow of current. |
| Series Circuit | An electric circuit connected so that current passes through each circuit. |
| Parrell Circuit | A electric circuit in which the current divides into two or more paths before coming back together to complete the circuit. |
