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# What is the difference between energy and voltage?

Answer Voltage is (potential energy). Answer Energy is the amount of work that the electrical current can perform... total watts. Voltage …is just a potential. An electric spark can jump a distance through air, and the distance is determined by voltage. A full description would take quite a bit of time and space on this web site, but some physics or other science books can certainly give an adequate description of the relationship between Volts, Amps and Watts, and give meaning to the formula: Volts X Amps = Watts

# What is the difference between current and voltage?

Voltage is the cause and current is its effect. Voltage is the potential difference between two points. When charges flow due to this potential difference, we say that current… is flowing. Voltage and current can be compared to a water reservoir with tubes connected to the outlet, the reservoir is the supply. Now, voltage is compared to the pressure of the water at the outlet of the reservoir, and current compared to the the volume of the water that flows through the tubes, the thicker and shorter the tubes, the less the resistance and larger the volume of water passing through the tubes. To measure voltage, a volt meter is connected across the output terminals of the supply; to measure current (in units of amperes), one of the wires connecting a circuit to to the supply is cut, and a ammeter is connected to the two ends; or if there is a switch in the circuit it can be switched off, and the current can be measured across the terminals of the switch. The best way to measure current is by using a clamp type ammeter. Voltage (sometimes called electric potential difference) is the electrical driving force set up by an electric potential difference. There are several ways to create an electric potential difference, but in any case, it is voltage that causes current flow if there is some kind of circuit or current path to support the flow. Current or current flow is the actual movement of electrons through the branches of a circuit when voltage (the "motivational force" that causes current flow) is applied. ---

# Why is it not good to operate a transformer above its nominal voltage?

Overexcited Transformer. Operation above the rated supply voltage causes the ferromagnetic core to enter saturation; this means that the primary inductance is reduced and s…ince the primary current is limited by primary resistance +inductance then the primary current will increase and possibly cause the primary winding current capacity to be exceeded. Also the iron core hysteresis loss will likely increase and cause the core temperature to rise. We have not considered eddy currents in the core, probably these are less than the hysteresis core loss. Addition: also the stresses that caused by increasing the voltage will over heat the transformer by mean the life time is redused, for example: if the life time for a transformer is 20 years this number will decrease due to operating the transformer on a higher voltages than the rated...

# Difference between current and voltage?

current:- the flow of electron or charge in conductor is called current. Voltage:- the potential difference of two point is called voltage

# What is the difference between voltage and signals?

That's a pretty good question. In computers a change in voltage level is usually the data signal. There are many industrial applications where a change in current i…s used as a signal. In fact ANY change in voltage or current can be used. Data signals are very weak (high impedance) compared to power supply voltage and currents.

# What is difference between voltage and current?

Voltage . . . The 'pressure' between two points that makes electrons 'want' tomove from one of the points to the other one. More pressure iscalled more 'volts'. This can deter…mine the brightness of lightsand the speed of electric motors. Current . . . the flow of electrons between those two points, IF there's something in the space that the electrons are able to flowthrough. More current is called more Amperes (or 'amps'). The amount of current depends on how strong the voltage is, AND onwhat the electrons are flowing through in order to get across thespace. (That's called the 'resistance' between the two points.Resistance is measured in 'ohms'. More ohms means it's harder forthe electrons to get across the space, and the result of that is... less current.) Comment: It's also worth pointing out that current is only a flow ofelectrons in (mainly) metal conductors. In other conductors, suchas electrolytes, a current is a flow of ions (charged atoms) ratherthan electrons -sometimes different types of ions flowing inopposite directions to each other at the same time. A more generaldefinition of current, therefore, would be 'a flow of chargecarriers '.

# What is the difference between voltage and Celsius?

Voltage measures electrical tension, Celsius measures temperature.

# What is nominal voltage?

It is the rated voltage of an electric equipment. It is the voltage at which the device is designed to operate. Another Answer Nominal means 'named'. So a nominal voltage is …the 'named' voltage. For example, the nominal voltage of the supply system in Britain is 230 V. But its actual value is allowed to vary between 216.2 V and 253.0 V.

# What is the different between voltage and current?

current is nothing but flow of electic charges through a particular area.it is denoted by I.its unit is ampere. V=IR by ohms law. voltage Voltage is the potential energy t…hat makes the electrical current flow in a circuit by pushing the electrons around. The unit of voltage is volt shown as 'v'.

# Why is voltage different between countries?

See this article on Wikipedia, for explanation and history of world electrical systems. http://en.wikipedia.org/wiki/Mains_electricity

# What is the difference between voltage and watts?

Voltage is electrical pressure .
Watts is power, the product of voltage and amperage Answer ' Voltage ' is another word for ' potential difference ', which is measured …in volts . It is the potential difference across a circuit that causes current to flow through that circuit. The watt is the SI unit of measurement for power . Power is a measure of the rate at which a load consumes energy, and is equivalent to a joule per second.

# What is difference between nominal and terminal voltage?

The rated voltage of a motor listed on the nameplate is called the terminal voltage. This indicates the actual voltage on the motors terminals at which at which the manufactur…er designed to operate. Whereas, Nominal voltage is the design or configuration voltage of the electricity distribution system.

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# What is difference between voltage and emf?

EMF stands for Electromotive force. EMF is measured in units of volts.

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# What is difference between retarding voltage and a voltage?

A retarding voltage is what causes the electronic to shut down.

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# How is different between voltage and current?

voltage = the electrical "pressure"current = the electrical "movement rate" or "flow rate"

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# What is difference between voltage and voltage drop?

voltage drop means the voltage difference.

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# What is the difference between voltage forward voltage and voltage drop?

Voltage is the potential difference between the source & any point in the circuit. The forward voltage is the voltage drop across the diode if the voltage at the… anode is more positive than the voltage at the cathode (if you connect + to the anode). Voltage drop means, amount of voltage by which voltage across load resistor is less then the source voltage.