Electronic Components #1

LED stands for...

• Light Emitting Diode

• Light Enhanced Diode

• Light Enhanced Device

• Light Emitting Device

Which is TRUE in relation to the pins of an LED?

• The long leg is the anode (positive pin) and the short leg is the cathode (negative pin)

• The long leg is the anode (negative pin) and the short leg is the cathode (positive pin)

• The long leg is the cathode (negative pin) and the short leg is the anode (positive pin)

• The long leg is the cathode (positive pin) and the short leg is the anode (negative pin)

For the next three questions, you will need to use the resistor chart on the inside of the lid of your Arduino kit. When you have it, answer 'yes'.

What is the resistance provided by this resistor?

• 563 ohms

• 56000 ohms

• 5.6 ohms

• 560 ohms

What is the resistance provided by this resistor?

• 47 ohms

• 470 ohms

• 4700 ohms

• 472 ohms

What is the resistance provided by this resistor?

• 10 ohms

• 100 ohms

• 101 ohms

• 1000 ohms

In a circuit, a button is used to...

• Turn the flow of current on and off

• Stop an LED from lighting up

• Turn an LED on

• None of these are correct

Photoconductivity is an ability exhibited by a photoresistor. What does this mean?

• You can take photographs with this device

• It can conduct photos

• The amount of resistance provided decreases as there is more light detected

• The amount of resistance provided increases as there is more light detected

In Python, a photoresistor will produce values between 0 and 1.

• TRUE

• FALSE

A photoresistor has a positive and negative terminal, so it matters which way it is connected in a circuit.

• TRUE

• FALSE