🔍 Key Concepts

• Difference between digital and analog devices in electronics • How a device behaves: does it have discrete states (on/off, 0/1) or continuously variable output? • Basic roles of thermistors, diodes, chokes, and resistors in circuits

💭 Think About

• Which of these components naturally operates in only two clear states (conducting/not conducting) instead of smoothly varying over a range? • Which devices in the list are typically used for sensing or controlling analog values, like temperature or current, rather than representing digital 0s and 1s? • Think about which component is most commonly found in simple logic circuits or rectifier circuits that deal with on/off behavior.

✅ Before You Answer

• Identify which choices are variable components (their resistance or impedance can smoothly change). These are usually analog, not digital. • Check which device is designed to allow current to flow mainly in one direction, giving a more on/off‑type behavior. • Make sure you can explain in one sentence whether each option is better suited to continuous control or two-state (on/off) operation before picking.