Electronic Components

Question 1

What is a resistor?

Answer 1

Resists current a specific amount

Question 2

LEDs

Answer 2

Light emitting diode
Drops down an electron which releases energy in the form of light
Longer lead is positive end

Question 3

Capacitor

Answer 3

Store electric charge
Ceramic capacitors flow forward and back
Electrolytic capacitors are polarized
Longer lead is the positive end

Question 4

Pushbutton switch

Answer 4

Controls the current like a gate

Question 5

Transistor

Answer 5

Only allows current all around if current is applied to the middle leg.
Can be used as a gate or amplifier.

Question 6

Light dependent resistors

Answer 6

Photoresistor
Increases resistance with less light exposure.

Question 7

Variable resistor

Answer 7

Potentiometer
Outer leads are for maximum and minimum resistance.
Middle lead is for setting the knob.
Resistance decreases as the middle pin moves away from the path that connects the min and max settings.
As resistance from max to mid increases, resistance from mid to min decreases.
Can be used for constant resistor, variable resistor, or voltage divider.

Question 8

Integrated circuits

Answer 8

Prepackaged circuits

Question 9

Microphone

Answer 9

Convert sound into voltage signal
Negative lead usually has solder trails.

Question 10

Speaker

Answer 10

Converts electrical signals back to sound.
Composed of a solenoid.
Omnidirectional

Question 11

Headphone jack

Answer 11

Allows sound in a circuit
Middle lead is ground