what type of device is this?

what is this?

Reverses its direction many times a second at regular intervals

One directional flow of electric current

Changes in value but never changes direction

Direct current is used in

Electric charge moves from the negative side of the battery to the positive side

Electric charge moves from the positive side of the battery to the negative side

This device is used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines

This device controls the flow of electrical current within a circuit.  It can be used to both inhibit the flow of the current or to initiate it.

This device acts as a one way switch for current 

A device whose resistance is dependent on temperature.

This device converts electrical energy into mechanical work.

This device is an electrically operated switch that opens and closes circuits by receiving electrical signals from outside sources. 

These devices measure a physical quantity in order to convert it into an electronic signal

Identify the electronic symbol.

What circuit element is this?

This circuit is .....?

This device stores electrical energy in an electric field.

This device is a collection of electronic components resistors, transistors, capacitors connected together to achieve a common goal

What element is used in transistors? 

What do transistors do in a circuit?  Select 2 answers. 

The three leads on a transistor are _____. Select 3 answers. 

Transistors in hearing aids act as 

​In a transistor the _____ current switches on the one larger one.  ​

The leg on a transistor that is the gate controller device for the larger electrical supply.

The leg of the transistor that is the larger electrical supply.

The leg of the transistor that is the outlet for the electrical supply. 

The work of the emitter is to ______ charge to the collector via the base.

​The size of the base is always kept _____ so that the charge carriers coming from the _____ and entering base will not recombine in the base region and will be directed towards the _____ region.  ​

​The collector region is slightly ____ than emitter region because all the charge carriers coming from the emitter recombine at base and ____ is released in this process. ​

​  At the center of the bulb is a wire (known as a _____) of pure _____.​

​ In a low-oxygen environment, the filament becomes red hot and emits a great deal of _____ when _____ is run through it.​

An electric motor uses _____ to create motion.

​In an LED an electrical ____ passes through a _____, which illuminates the tiny light sources we call LEDs and the result is visible _____.  ​

Speakers convert ____ into ____.

Alternating current changes direction ___ times per second.

Which of the following can provide direct current? Select all the correct answers.

The electricity supplied to homes is _____ current. 

The current that comes from a power plant is _____.

Electric current can flow in two directions. 

Why is a capacitor used in circuits?

How do you know which side of a capacitor has a negative charge?

The capacitance of a capacitor is measured in

How can you safely discharge a capacitor?

A transistor can be compared to a 

In a transistor, the depletion region/layer acts as a barrier and repels electrons.

Transistors can be made smaller with no limits on size.

I know which pin is pin 1.

What is this device?

This device is a

The rating on this capacitor is

Which schematic circuit matches this circuit picture?