Green, Black, Orange, (gold / silver)
Green = 5
Black = 0
Orange = x10^3
50x10^3 = 50,000 or 50k Ohm
Green Red Brown
yellow-violet-brown
The current would be about 20 volts.
3
No, a 2.2k ohm resistor and a 220 ohm resistor are not the same resistance. The "k" in 2.2k ohm stands for "kilo," which represents a multiplier of 1000. Therefore, a 2.2k ohm resistor is equivalent to 2200 ohms, while a 220 ohm resistor is simply 220 ohms. The difference in resistance values is a factor of 10 due to the kilo prefix.
orange-orange-orange
Green Red Brown
A 0.1 ohm resistor is color coded brown (1) black(0) silver (x 10-2).
470K ohm at 5% tolerance
Green - Black - Red, but this is not a standard value. You probably want a 5.1K resistor, and that is Green, Brown, Red
yellow-violet-brown
Green, Black, Black, Brown!
The current would be about 20 volts.
1amp
Basically you can either read the resistance that is printed on the resistor (with a special color code, which you would have to learn), or you can use Ohm's Law, by measuring a voltage through the resistor and the corresponding current. I am not aware of any third method.
3
brown, red, yellow , in case of gold its 5% tolerence, silver 10% tolerence, no color 20% tolence..