A resistor is marked with the rings coloured brown, black, green, and gold. The resistance in ohm is

Options

A. `(3.5xx10^(5)pm5%)`
B. `(1.10xx10^(5)pm10%)`
C. `(8xx10^(6)pm5%)`
D. `(1xx10^(6)pm5%)`

Answer

To determine the resistance value of a resistor marked with the colors brown, black, green, and gold, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Color Code Values**:
- The first two colors represent significant digits:
- Brown = 1
- Black = 0
- The third color represents the multiplier:
- Green = 10^5
- The fourth color represents the tolerance:
- Gold = ±5%

2. **Construct the Resistance Value**:
- Combine the significant digits:
- The first digit (brown) is 1.
- The second digit (black) is 0.
- Therefore, the significant digits combined give us 10.
- Apply the multiplier (green):
- Multiply the significant digits (10) by the multiplier (10^5):
- Resistance = 10 × 10^5 = 10^6 ohms.

3. **Express the Final Resistance Value**:
- The resistance value is 10^6 ohms with a tolerance of ±5%.
- Therefore, we can express it as:
- Resistance = 1,000,000 ohms ± 5%.

### Final Answer:
The resistance is 1,000,000 ohms (or 1 MΩ) ± 5%.

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