Review
Electric Field
a region around a charged particle or object within which a force would be exerted on other charged particles or objects
Magnetic Field
a region around a magnetic material or a moving electric charge within which the force of magnetism acts
Magnetic Domain
a region within a magnetic material in which the magnetization is in a uniform direction
Magnetic poles
each of the points near the extremities of the axis of rotation of the earth or another celestial body where a magnetic needle dips vertically
Direct Current
an electric current flowing in one direction only
Alternating Current
an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies
Electromagnet
a type of magnet in which the magnetic field is produced by an electric current
Electromagnetic induction
a process where a conductor placed in a changing magnetic field
Transformers
an apparatus for reducing or increasing the voltage of an alternating current
Equivalent resistance
More resistance means less current is flowing through the circuit. Equivalent resistance is a different way of indicating 'total' resistance, which we calculate differently for series and parallel circuits. ... In a parallel circuit, separate branches connect the components
Generator
any device for converting mechanical energy into electrical energy by electromagnetic induction
motor
Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. They transform electrical energy into mechanical energy
Potential Difference
the difference of electrical potential between two points
Insulator
a thing or substance used for insulation, in particular
Conductor
a person who directs the performance of an orchestra or choir
Resistor
a device having a designed resistance to the passage of an electric current
Voltage
an electromotive force or potential difference expressed in volts
Power
the ability to do something or act in a particular way, especially as a faculty or quality
Ampere
a unit of electric current equal to a flow of one coulomb per second
OHM
the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt
Volt
the SI unit of electromotive force, the difference of potential that would drive one ampere of current against one ohm resistance
Induction
the action or process of inducting someone to a position or organization
Parallel Circuit
is a closed circuit in which the current divides into two or more paths before recombining to complete the circuit
Series Circuit
is a closed circuit in which the current follows one path, as opposed to a parallel circuit where the circuit is divided into two or more paths
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