Inside the computer, the various ground wires are black. Computers use direct current inside. The wiring color differs from AC, where both red and black wires are hot wires, white is neutral, and green or bare is ground. In a computer, the red and yellow wires are positive wires of different voltages.
Usually black.
When connecting cables for your front panel LEDs the colour may be different than black, look for the common colour among all cable pairs. That'll be ground.
there are very few wires in a lap top but in a computer there are gray red black and blue green and brown
Black. Irrespective of if they are from the psu to the board, or molex.
Usually green or black.
red, yellow and white
black
Computers are not dryers; they do not have a "hot wire."A standard desktop PC power supply unit uses this color code:The black wires is ground (zero V).The red wires provide +5 V.Yellow wires provide a +12 V to a device.
Grounding an electrical or electronics device commonly refers connecting it's power inlet ground pin to the ground connection of the power outlet. The power outlet ground connects to the ground connection provided by the electricity utility company or the building's common ground connection. The grounding essentially provides a zero volt reference. Many systems which have a metal chassis provide specific grounding points with screws/nuts to connect grounding wire. To ground chassis of a computer one need to connect ground wire to the metal case.
On the Mercedes ml320 you should be able to ground the o2 sensor to the body of the car. Just find an unpainted section and stick its ground wire on. If this does not work, try adding an isolation capacitor between the grounding pin and chassis as well. If this still doesn't work, got to the dealer.
ATX power supplies do not have dedicated switches. They are signaled to turn on by a small button plugged into the motherboard and placed on the front of the computer case. It is possible to force an ATX power supply to turn on by running a wire between the PS_ON wire (the green wire) to a ground wire (a black one).
If a "hot" wire contacts the "neutral" or ground wire, electrical current flows to the ground.
In Bangladesh the color of live is green and neutral is blue and ground is black.
The chasis is the ground. There is no wire.
The ground wire at the bulbs is black.
black
Sorry, there is no "ground wire" for a microphone. Commercial microphones have shielded symmetric wiring. Cheers ebs
green
There are for stereo wiring color codes. The red wire is the positive wire. The black wire is a ground wire. The green wire is the speaker wire. The white wire is the auxiliary wire.
green
red wire
Depends on what you are wiring. Green is a common color used for ground. Sometimes it is just a bare copper wire.
simple rule of car electronics: The black wire is ALWAYS ground
White is the neutral wire. Black is hot, green is ground.