Practically current can not completes the total circuit and it can not go back to the source because neutral wire is connected to the source and it has zero potential . Potential is applied to the hot wire so that electron flows from the ground to the load as ground is pretend to have zero potential..
Similarly, why does current return to its source?
Electricity always returns to the source of the power supply (a transformer or substation). When electrical current cannot flow through a neutral conductor, due to some type of damage or defect in the circuit, more current will use a path through the earth to return to the power supply.
Furthermore, which direction does current travel through an LED to turn it on? Current flows from the anode to the cathode and never the opposite direction. A reversed LED can keep an entire circuit from operating properly by blocking current flow.
Also asked, how does current flow to earth?
The current flows from one point of the circuit, through ground, then back into the circuit. It can't flow to ground, because there is nowhere for it to flow. Earthing is used to protect you from an electric shock. It does this by providing a path for a fault current to flow to earth.
How does current flow through human body?
Electric current is the flow of charged particles through an object. When current flows through the human body, it can cause a lot of problems. Currents as low as 10 mA can cause severe muscle contractions and burns, while currents of 20 mA or greater can cause paralysis of the muscles that allow you to breathe.
Related Question Answers
Does the neutral wire carry current?
To sum up, a live wire carries the full load current, while a neutral wire carries some current, only when the loads are not balanced.Does current flow through the neutral wire?
For an electric current to flow through, the current needs a power source and a return path. In this case, the power source is the line wire, and the return path is the neutral wire. For an electric current to flow through, the current needs a power source and a return path.What happens if live touches earth?
If a live wire touches the earth wire, you get a spark and the circuit breakers blow. There will be a big flash of light and a bang and the circuit protection device will cut the power, whether it's a fuse, over-current protection circuit breaker or a residual current (ground fault) detector which trips.Why does current flow through the earth wire?
The current flows from one point of the circuit, through ground, then back into the circuit. It can't flow to ground, because there is nowhere for it to flow. Earthing is used to protect you from an electric shock. It does this by providing a path for a fault current to flow to earth.Is there electricity in the ground?
The ground is an attractive place for electricity to flow because it is positively charged, only more so when the tiny particles in the atmosphere collide, filling clouds with negatively charged particles. (These are also called ions.)Is there current in an open circuit?
In the open circuit the current can not flow from one end of the power source to the other. Because of this there is no current flow, and therefore the light does not turn on.Where does fault current go?
The ground fault current flows through the ground rods or any other conductor in touch with the earth and then the current flows through the earth to the grounding system at the generation station or more likely at the grounding point of the transformer feeding the system where it completes the circuit with the phaseWhat is meant by return current?
In general, a return current refers to the ground current, the sum of all currents from commonly referenced power supplies to the board. If large DC currents flow then there can be an offset at different parts of the circuit leading to voltage errors in analog systems and reduced noise margins in logic circuits.What is earth wire?
An earth wire is literally a wire that goes down into the earth - also known as an “earth ground.” It's meant to be the electrical path that unwanted electricity (such as lightning or a short-circuit) finds easiest to take.What is the current in the earth wire?
The idea of the the earth wire is that if somehow the live wire touches the case of the gadget the electrcity flows to earth through the earth wire (and with enough current to blow a fuse) rather than through you. Most of the time there is no current flowing in the ground wire and so it is very close to zero volts.What is meant voltage?
Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field. An example of direct voltage is the potential difference between the terminals of an electrochemical cell.Is Ground positive or negative?
Usually in electronics, ground is just a name we give to a certain point in the circuit. In a circuit with one battery (with a positive and a negative terminal), we usually refer to the negative terminal as ground.What is meant by current?
Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. Physicists consider current to flow from relatively positive points to relatively negative points; this is called conventional current or Franklin current. Electrons, the most common charge carriers, are negatively charged.Why neutral has no current?
Electrically neutral is zero potential with respect to live potential. While ground wire is used for safety purpose. It provides a low impedance path for the fault current to flow to the ground, instead of our body and thus saving us from dangers of electrocution.Why do electrons go to ground?
Electricity is just electrons wanting to go somewhere. So whenever you stick something conducting into the ground and connect something charged (which means "packed with too many electrons) to this conductor, the electrons will flow through the conductor into the ground.Why does current go into ground?
Electricity (whether it comes from lightning or any other source) heads to the ground as a result of some very basic forces. Basically, clouds filled with tons of negatively charged particles are attracted to the positively charged ground.What is ground in circuit?
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. Electrical circuits may be connected to ground (earth) for several reasons.What direction does current flow in?
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.What happens if you wire a LED light backwards?
if you switch from incandescent to LED, what happens if you accidentally wire it backwards? LED lights are diodes so if you were to wire them backwards on accident they just wouldn't light up. There would be no damage at all. 
Sarah Oconnor 
