It is the movement of electrons through a wire. Electric current is measured in amperes (amps) and refers to the number of charges that move through the wire per second.

It is an electric device that is used to change the voltage in alternating current (AC) electric circuits.

Electrons move steadily in one direction or 'forward'.

Safe to transfer over longer city distances and can provide more power.

Convert the electrical energy into other forms of energy – most likely light, heat or motion.

The electrons are the only moving charge of the electronic device and hence their response time is less.

Mainly work on the alternating current

A box used to organize electronic devices called a surface mount device

Two lead semiconductor light source. It is a p-n junction diode that emits light when activated.

Components that limit the flow of current to other components. When you plug a wire into the 5v power pin on an Arduino, but a component can only handle 3.5v, you need to find a way to restrict the amount of power (current) it receives in order to avoid damage.

The second important passive component, a device that stores energy in the form of electric field.

Rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity and acceleration.

Three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider.