The colour coded resistance of corbon resistance is (Initial three bands are red and fourth band is silcer)

Options

A. `222 . Omega +- 10 % `
B. `2200 Omega +- 10 % `
C. `333 Omega +- 5 % `
D. ` 33000 Omega +- 10%`

Answer

To solve the problem of determining the resistance value based on the color-coded bands of a carbon resistor, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Color Codes**: The first three bands are red, red, and red, and the fourth band is silver.
- The color code for resistors is as follows:
- Red = 2
- Multiplier (Red) = 10^2 = 100
- Silver (Tolerance) = ±10%

2. **Determine the Value from the First Two Bands**:
- The first band (Red) represents the first digit: **2**
- The second band (Red) represents the second digit: **2**

3. **Calculate the Resistance Value**:
- Combine the first two digits to form a two-digit number: **22**.
- The third band (Red) indicates the multiplier: **100** (which is 10^2).
- Therefore, the resistance value can be calculated as:
\[ R = 22 \times 100 = 2200 \, \Omega \]

4. **Determine the Tolerance**:
- The fourth band (Silver) indicates the tolerance: **±10%**.

5. **Final Resistance Value**:
- The final resistance value can be expressed as:
\[ R = 2200 \, \Omega \, \pm 10\% \]

### Conclusion:
The resistance value of the carbon resistor is **2200 Ω ± 10%**.