0
For various reason some charges may accumulated on an electric equipment. If any personal touch it he/she may get shock. That is why an extra path is provided as ground connection to remove these charges from electric body to the Earth.
==========================================================
I was answering contemporaneously, the above answer is correct :-)
If two points are charged and they are connected by a perfect conductor, the current flowing between the two points depends on the potential due to the charge difference. The current flows moving electrons from the negative to the positive element up to the moment in which the charge difference is nullified and no current flows due to the presence of no potential difference.
If I connect a charged element to a very large, uncharged body, almost all the charge of the charged element is discharged towards the large body, creating a current burst. This happens when I touch with my body a charged element in a circuit: my body is big and neutral and it works as a sort of zero potential element, so that all the charges are discharged towards my body in a current burst that can be quite dangerous.
Earth is much bigger with respect to my body, if I create a connection between the circuit and the earth that acts as a potential reference, if I touch the circuit I am at the same potential of earth, at zero potential, but no discharge happens since all possible charges have been already discharged towards Earth.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is the process of connecting an object to Earth with a conductor called?
Grounding.
What season has the earth's axis form a 90 degree angle with the line connecting the earth and sun?
If im thinking correctly, it should be when summer or winter start. Hope that helps!
All positions of Earth's axis are parallel to each other?
The circle of latitude is wherein all positions of the Earth's axis are parallel to each other. It is an imaginary east-west circle connecting all locations.
How do you make a good earthing?
we make a ground earthing for our safety and also safety of electric instruments.steps :1.Locate the earth pit.2.Dug a pit of 1.2m deep and 1m squared.3.Put the earth rod in the bottom and hammered to 3 quarter into the ground.4.Connect the earth rod to the main earth conductor using earth clamp.5.Seal the joints using tar.6.Pour sodium chloride and water into the pit to increase the resistance of the area.7.Quarter fill the pit with powdered solid carbon for more area conductivity and maintenance of deepness.8.Barry the pit.9.Connect the earth load to the main earth of the house.
Why does electricity want to get to earth?
Did you mean "Why does a lightning bolt go to the Earth ? " Because it's the shortest way to this kind of electricity to go. If an asteroid passes near two clouds charged positively and negatively, the lightning bolt will go towards the asteroid and not to the earth.
What does Purging a metal container used to hold liquid is a safety precaution eliminate from the container?
the potential difference between an object and the earth can be minimized by
When charge are able to flow directly from the circuit into Earth a ciruit electrically?
That is what the Earth wire does. Normally it does not carry current but it has this important safety function.
What does it mean RCD?
Residual Current Device. Also known as an Earth Leakage Circuit Breaker or a Safety Switch
Can earth wire be used as a neutral wire?
No, an earth wire has a specific safety role in an electrical circuit that does not allow it to be used as one of the two current-carrying wires.
Why earthing is required in star connection?
It is essentially a safety feature. The "neutral point" of the star (or Y) configuration in three-phase circuits would normally be at an electrical potential of 0 (zero) volts, but if the circuit is unbalanced the voltage at this point could rise considerably. If this point is earthed and any voltage appears at this point due to a circuit imbalance, an "earth leakage current" will begin to flow. This earth leakage current can be detected and used to trip a circuit-breaker to cut off the electrical supply for safety. Earth Leakage Circuit Breakers (ELCB) are commonly used in industry and around the home for reasons of safety.
What does grounding mean in science?
Same as earthing. Connecting an electric circuit to the ground allows electrons to flow down to earth, and spread out. It therefore acts like an absolute 0V level in the circuit. There are various reasons why one might want to do this.
Why do outlets have 3 holes?
Live, neutral and earth. The supply is carried on the live and neutral, and the earth normally carries no current, but if there is a fault the earth is there as a safety factor and in some conditions it carries enough current to blow the fuse and make the circuit safe.
An isogonic line on the earth's surface is a line connecting all points at which?
line connecting magnetic north
What is the process of connecting an object to Earth with a conductor called?
Grounding.
Is a circuit electrically grounded if it can carry electric current from a short circuit directly to earth?
Yes, This is a common precaution built into many electrical home devices today. This utilizes a 3 conductor 3 pin plug in which the round center pin is electrically connected to the cabinet or housing of the appliance making it grounded. In older appliances that use the 2 conductor method there may be a chance of plugging in the appliance with the blades reversed and making the housing electrically hot. On newer electric appliances that use 2 blades one is made wider which is the ground connection for the plug. The newer appliances can also be made safer yet through the use of double insulation.
Why is earth wire not needed in a light circuit?
A ground (earth) wire is needed in not just a light circuit but in all circuits that are now installed.
Open circuit and short circuit test?
Open circuit means the circuit is not continuous . A short circuit is continuous but has a fault connecting between either live to neutral or earth .As result of this we saw that this answer is unsufficent to explain short and open circuit on the other hand you can use this answer also like i did:)
