Code Module 2 Quiz | OceanRemote Education

1 What resistor is needed for an LED?

A) 10Ω B) 220Ω C) 10kΩ D) 100kΩ

2 What logic turns ON an active LOW relay?

A) HIGH B) LOW C) INPUT D) OUTPUT

3 What is PWM used for?

A) Digital input B) Serial communication C) LED dimming and motor speed D) WiFi connection

4 What is the PWM resolution on ESP32?

A) 4-bit B) 10-bit C) 8-bit default (0-255) D) 16-bit

5 What is button debouncing?

A) Filtering false readings B) Making button louder C) Increasing speed D) Saving power

6 What pin mode enables internal pull-up?

A) INPUT B) OUTPUT C) INPUT_PULLUP D) INPUT_PULLDOWN

7 What is the typical debounce delay?

A) 5ms B) 50ms C) 500ms D) 5s