A color code of orange, orange, orange is for what ohmic value?
33 kilo ohms
Understanding resistor color codes is a fundamental skill in electronics. Resistors are electronic components designed to oppose the flow of electric current. Their resistance value is often indicated by a series of colored bands printed on their body. Each color represents a specific numerical value, multiplier, or tolerance.
Resistor Color Code Fundamentals
The standard resistor color code uses several bands to indicate resistance. For a three-band or four-band resistor, the first two bands represent significant digits, the third band is the multiplier, and the fourth band (if present) is the tolerance. If there is no fourth band, the tolerance is typically 20%.
Here's a common table for resistor color codes:
| Color | Digit | Multiplier | Tolerance |
|---|---|---|---|
| Black | 0 | $10^0$ (1) | |
| Brown | 1 | $10^1$ (10) | $\pm 1\%$ |
| Red | 2 | $10^2$ (100) | $\pm 2\%$ |
| Orange | 3 | $10^3$ (1 k$\Omega$) | |
| Yellow | 4 | $10^4$ (10 k$\Omega$) | |
| Green | 5 | $10^5$ (100 k$\Omega$) | $\pm 0.5\%$ |
| Blue | 6 | $10^6$ (1 M$\Omega$) | $\pm 0.25\%$ |
| Violet | 7 | $10^7$ (10 M$\Omega$) | $\pm 0.1\%$ |
| Grey | 8 | $10^8$ (100 M$\Omega$) | $\pm 0.05\%$ |
| White | 9 | $10^9$ (1 G$\Omega$) | |
| Gold | $10^{-1}$ (0.1) | $\pm 5\%$ | |
| Silver | $10^{-2}$ (0.01) | $\pm 10\%$ | |
| No Band | $\pm 20\%$ |
Ohmic Value Calculation for Orange, Orange, Orange
Let's determine the ohmic value for a resistor with the color code orange, orange, orange, following the standard resistor color code scheme.
- The first band is Orange. According to the color code table, Orange represents the digit 3. This forms the first significant digit of our resistance value.
- The second band is also Orange. This represents the digit 3. This forms the second significant digit of our resistance value.
- The third band is Orange. For the third band, Orange represents a multiplier of $10^3$. This means we multiply the two significant digits by 1,000.
To calculate the total resistance, we combine the significant digits and then multiply by the multiplier:
Resistance = (First significant digit) (Second significant digit) $\times$ Multiplier
Resistance = $33 \times 10^3 \text{ Ohms}$
Resistance = $33,000 \text{ Ohms}$
Since 1 kilo ohm (k$\Omega$) is equal to 1,000 ohms, we can convert this value to kilo ohms:
Resistance = $33,000 \text{ Ohms} \div 1,000 \text{ Ohms/kilo ohm}$
Resistance = $33 \text{ k}\Omega$
Therefore, a resistor with the color code orange, orange, orange has an ohmic value of 33 kilo ohms.
Important Questions from Circuit Elements
In wire-wound standard resistor, the bifilar winding is adopted to reduce ______.
Change in resistance of a conductor on increasing its length 3 times will be
A capacitor that can store 100 μC of charge with 10 V across its plates has a capacitance value of
The voltage induced in an inductor is represented as
Which component opposes voltage change?
