yellow-violet-brown
The current would be about 20 volts.
No. 2.2K ohm is 2200 Ohms.
3
Green Red Brown
The first three bands on a resistor tell you what its resistance is. The first band is the first digit, the second band is the second digit, and the third band is the number of zeros to add. Use the resistor color code to convert... 0 Black 1 Brown 2 Red 3 Orange 4 Yellow 5 Green 6 Blue 7 Violet 8 Grey 9 White As an example, a 27000 ohm resistor would be Red - Violet - Orange. If the third band is Silver, the multiplier is 0.1 and, if the third band is Gold, the multiplier is 0.01. For example, a 0.39 ohm resistor would be Orange - Gray - Gold.
Resistors are color coded to denote the value of the resistor as well as the multiplier. In your case a 470 ohm would be colored as Yellow Violet Brown corresponding to 4, 7 and a multiplier of 10^1.
Green - Black - Red, but this is not a standard value. You probably want a 5.1K resistor, and that is Green, Brown, Red
You need to calculate the equivalent resistance. For instance, if the three resistors are connected in series, simply add all the resistance values up. Then, you calculate the current (in amperes) using Ohm's Law (V=IR); that is, you need to divide the voltage by the resistance.
First off, it's going to have a brown and an orange ring for the first two bands but then your last band is going to depend on the tolerance of the resistor whether it's +/- %.05 up to +/- %10.
Green, Black, Black, Brown!
orange-orange-orange
The current would be about 20 volts.
1amp
A 0.1 ohm resistor is color coded brown (1) black(0) silver (x 10-2).
No. 2.2K ohm is 2200 Ohms.
3
A zero ohm resistor is a piece of wire with a resistor body. It is essentially a jumper. It is useful when a jumper is need on a printed circuit board that is assembled by automated machinery, because the automated machinery can handle resistor insertion far easier than a jumper wire. The color coding on a zero ohm resistor is one single black band.