- 2071 Bhadra · 2+2 marks
Active/passive components and color code
Short answer
Active components supply energy or amplify (e.g., transistor); passive components cannot amplify (e.g., resistor). The colour code for 75 kΩ ±10% is Violet (7), Green (5), Orange (×10³), Silver (±10%).
Define active and passive circuit component. Determine the color code of the following resistor 75 KΩ ± 10%.
Active circuit component
A component that supplies energy to the circuit or controls the flow of current/amplifies a signal using an external power source. Examples: transistor, op-amp, SCR, IC.
Passive circuit component
A component that can only store, absorb or dissipate energy and cannot amplify or generate power. Examples: resistor, capacitor, inductor.
Colour code of 75 kΩ ± 10%
75 kΩ = 75 × 10³ Ω → digits 7 and 5, multiplier ×10³.
| Band | Colour | Meaning |
|---|---|---|
| 1st | Violet | 7 |
| 2nd | Green | 5 |
| 3rd (multiplier) | Orange | ×10³ |
| 4th (tolerance) | Silver | ±10% |
Answer: Violet, Green, Orange, Silver
✓ Answer checked by Claude Opus 5.5 (high effort)
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