🔍 Key Concepts

• Identify how a fixed, non-polarized capacitor is drawn in schematic form • Distinguish between polarized (electrolytic) capacitors and variable capacitors in symbols • Match the physical style of the device in figure 4 (plastic/ceramic body with two leads) to the correct standard symbol

💭 Think About

• Look closely at figure 4 and decide: is this capacitor polarized (marked + / -) or non‑polarized? How is that usually shown in a schematic symbol? • Compare the symbols under choices A–D: which ones clearly represent a variable device (something that can be adjusted), and which ones represent a fixed value? • Among the fixed symbols, which one does NOT show polarity, and so best matches the type of capacitor in figure 4?

✅ Before You Answer

• Be sure you can explain to yourself which symbols show a variable capacitor (hint: look for a diagonal arrow or line). • Confirm which symbols show a polarized capacitor (hint: one plate drawn differently, often with + marking). • Before picking, verify that the symbol you choose represents a fixed, non‑polarized capacitor that matches the appearance and markings of figure 4.