Controlling the LED blink rate with the potentiometer and Arduino

Q1. What is the purpose of expansion boards in Arduino Uno?

a) To reduce power consumption

b) To increase the size of the board

c) To augment functionalities

d) To decrease processing speed

Q2. Which material is not commonly used in the construction of LEDs?

a) Silicon

b) Gallium arsenide

c) Copper

d) Gallium nitride

Q3. What is the main microcontroller used in Arduino Uno?

a) ATtiny85

b) ATmega328P

c) ESP82666

d) STM32

Q4. What is the function of a potentiometer?

a) To regulate voltage

b) To emit light

c) To amplify sound

d) To store data

Q5. How many terminals does a potentiometer have?

a) One

b) Two

c) Three

d) Four