what is voltage?

Answer 1

Voltage is named for an early Italian scientist named Volta who was one of the early pioneers in electricity. Voltage is "electromotive force" which is the relative force with which electric charges are forced to move. I like the water analogy for electricity and in this line of thinking, Voltage is equivalent to water pressure, while Amperage or current is the quantity of said flow. Resistance is best visualized as "bottle necks" in the flow. I hope this helps.

Answer 2

It is also call potential difference.

It can be compared with water in the stream, water flows from high ground to lower ground. Say it is the deference of 5 ft. In case of the water it will be a head difference or 5 ft head.

Same way electricity can only flow it there is voltage or potential deference.

For residencial use:

In India most of the time this is 250 Volts nominal. In USA it is 120 Volts for light, computer.... and 250 Volts for water, heater...., nominal. Without this deference the current will not flow.

You cannot have electricity supplied without voltage.

Answer 3

One way to look at it (although not very accurate): Picture water going through a plumbing pipe. You might say the SPEED of the water is its voltage. The AMOUNT of water going through (in a given amount of time) would be its amperage. If the water is going fast, it would shoot out of the pipe a great distance--- just as a higher voltage would jump further out of the end of a wire (to another electrode). A very small and a very large battery can be the same voltage; the large one just has more amps (water) it can give you.

Answer 4

Voltage is neither a pressure nor a force! It is the negative integral of the electric field dotted with dl!

A force would be a the electric field times the charge of the particle.

Pressure at the surface of a conductor is epsilon naught times the electric field squared divided by two.

The units of volts are equal to Joules per Coulombs [in the wonderful SI system], so a volt is energy per unit charge.

Answer 5

To be simple it is the potential or the pressure at which power is pumped.For domestic use we have 220-230 Volts for single phase as standard in India.This voltage is sufficient to distribute power up to a few Kms.
For transmission of power to long distances we have HT(11 KV,22 KV),EHT(66 KV and above.we are using up to 700 KV in India for transmission.
In Electronics (except the picture tube which is HT) the voltage is usually fraction of Volts
Voltages above 12 Volts can be felt and higher voltages are dangerous.

Answer 6

The voltage difference between two points is the difference in potential energy of a hypothetical unit charge placed at one point vs. the other due to the interceding electric field. A point deep within the earth is most commonly used as one of these point.

Answer 7

Voltage is the Electromotive Force with which a unit of current overcomes the resistance of the Conductor through which it flows

Answer 8

Electromotive force or potential difference, usually expressed in volts.

Layman terms, the movement of or the differen ce in the movement of the force within an electric current. The stronger the force, the higher the voltage

Answer 9

I am explaining u in just simple words. Voltage is also known potential difference. Firstly, electric field is an area upto which the influence of a charge can be experienced. Now, the amount of energy required to bring a chrge from infinity into this field is known as electrostatic potential. And the amount of work done in moving a charge from one point to another in an electric field is known as potential difference(voltage).Its unit is volt(V). It can be also defined as amount of work done divided by quantity of charges transferred(in coulumbs).

Answer 10

Hello Friend!
Voltage is the product of current through the conductor and the resistance of the conductor, provided that the temperature remains constant.
ie., V = IR
It is also the workdone in moving the unit charge from one end of the conductor to the other end.