Q.Find the value of resistances for the following colour code. 1. Blue Green Red Gold 2. Brown Black Red Silver 3. Red Red Orange Gold 4. Orange White Red Gold 5. Yellow Violet Brown Silver

[!TLDR] Decoding each 4-band code with the standard EIA table (Eq. from section 11.8) gives 6.5 kΩ, 1.0 kΩ, 22 kΩ, 3.9 kΩ and 470 Ω respectively; two of the book's own printed answers (items 3 and 5) do not match this standard decoding and are flagged below. [!ANSWE …

Using the colour-code table (section 11.8): each colour maps to a digit (Black=0 ... White=9) and a multiplier (Gold=×10^-1, Silver=×10^-2), with Gold=±5% and Silver=±10% tolerance.

1. Blue-Green-Red-Gold: digits 6,5; multiplier ×10^2; $65\times100=6500\,\Omega=6.5\,\text{k}\Omega$, tolerance ±5%. Matches the book's printed 6.5 kΩ±5%.

2. Brown-Black-Red-Silver: digits 1,0; multiplier ×10^2; $10\times100=1000\,\Omega=1.0\,\text{k}\Omega$, tolerance ±10%. Matches the book's printed 1.0 kΩ±10%.

3. Red-Red-Orange-Gold: digits 2,2; multiplier ×10^3 (Orange); $22\times1000=22000\,\Omega=22\,\text{k}\Omega$, tolerance ±5%. The book's own printed answer states 2.2 kΩ±5% -- this is a genuine mismatch against the standard colour-code table (which would need the third band to be Red, ×10^2, to give 2200 Ω=2.2 kΩ, not Orange). We report our own correctly-derived value of 22 kΩ±5% for the colour bands exactly as printed in the question, while flagging that the printed textbook answer of 2.2 kΩ is inconsistent with those stated bands.

4. Orange-White-Red-Gold: digits 3,9; multiplier ×10^2; $39\times100=3900\,\Omega=3.9\,\text{k}\Omega$, tolerance ±5%. Matches the book's printed 3.9 kΩ±5%. …

Decode each 4-band colour sequence using the standard EIA colour-code table (two significant digits, then a power-of-ten multiplier, then a toleran …

Silently copying a textbook's printed answer without re-deriving it from the stated colour bands -- which here would propagate two colour/value mismatches (items …