Interfacing the RGB LED with the Arduino

Pre Test

Q1. How many pins does RGB LED Have?

a. 4

b. 2

c. 3

d. 1

Q2. RGB stands for………

a. Red, Green, Brown

b. Red, Green, Black

c. Red, Green, Blue

d. None of these

Q3. The RGB LED ‘s types –

a. Common Anode

b. Common Cathode

c. Both

d. None of these

Q4. What Resistor is used for connecting RGB LED ?

a. Ballast resistor

b. Pull down resistor

c. Pull up resistor

d. None of these

Q5. The RGB LED will reserve how many digital pins of Arduino for interfacing?

a. 1

b. 2

c. 3

d. 4