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Which law states that the algebraic sum of the electromotive force and voltage drop around any closed electrical loop is zero?
Wiki User
∙ 11y ago
Kirchhoff's voltage law.
Wiki User
∙ 11y ago
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What emf stands for?
Electromagnetic field (induces around the metal when current flows through it). Another opinion: Nope ! 'EMF' stands for 'Electromotive Force' . We refer to it casually as 'voltage'.
What is the difference between voltage and emf?
E.M.F: Is the potential difference between two terminals when there is no current i.e. circuit is open, therefore [EMF = OCV].OCV :open circuit voltage.Voltage: Is the potential difference between two terminals when there is current i.e. closed loopAnswerAn e.m.f. (electromotive force) is a voltage or, more accurately, a potential difference ('voltage' is simply another word for 'potential difference'). However, it is the potential difference that appears across the terminals of a supply when it is not connected to its load. When the supply is connected to a load, this potential difference falls because of an internal voltage drop across the supply's internal resistance. So the simple answer is that an electromotive force is a supply's open-circuit terminal voltage.Another definition is obtained from Kirchhoff's Voltage Law, from which we can say that an electromotive force is equal to the sum of all the all the voltage drops around the circuit, including its internal voltage drops.
What is Inductor transient response?
An inductor resists a change in current through the creation/destruction of the magnetic field around the inductor. In an IR Circuit, when the electromotive force (the battery voltage) changes, the inductor will create a voltage to oppose the change, causing the current flowing through the circuit to change gradually over time rather than instantaneously. In an ideal IR circuit, the induced voltage is initially equal and opposite to the change in electromotive force, and it decays exponentially, with a time constant proportional to the inductance of the circuit.
What is the function of emf in electric circuit?
An electromotive force is the potential difference developed by a voltage source, and is necessary to cause current to flow through a circuit. Strictly-speaking, it is the open-circuit potential difference of a battery, generator, etc. An alternative definition is that an e.m.f. is equal to the sum of the voltage drops around any closed loop, including any internal voltage drop.
What is difference between voltage and emf?
An electromotive force (e.m.f.) is the open-circuit, or no-load, potential difference provided by a source -such as a battery or generator. For a closed circuit, an e.m.f. is the sum of the voltage-drops around any closed loop, including the internal voltage drop of the source.A potential difference (voltage) can exist across any circuit component. For example, the fact that current is flowing through each of several resistors in a series circuit means that there must be an individual potential difference across each of those resistors (which we also term 'voltage drop').An electromotive force is the name we give to the open-circuit potential difference provided by a generator, battery, etc. For example, the open circuit potential difference of a battery would be its electromotive force.So, if we use a series resistive circuit as an example, the battery would provide the electromotive force, while voltage drops would then appear across its internal resistance, and across each of the resistances. The magnitude of the electromotive force is then equal (but acting in the opposite sense) to the sum of the voltage drops, including the internal voltage drop.Many textbooks use the symbol, E, to represent an electromotive force, and V to represent potential difference. So, Kirchhoff's Voltage Law, for example, will often be seen written as: E = V1 + V2 + V3 + etc.
Is the total voltage drop around a series circuit equal to the voltage of the battery?
No. The total voltage drop around a series circuit, per Kirchhoff's voltage law, is zero. However, it is true that the total voltage drop of all of the components except the battery is equal and opposite to the voltage drop of the battery.AnswerInterestingly, the formal definition of electromotive force is based on Kirchhoff's Voltage Law: 'A source's electromotive force is equal to the sum of all the voltage drops around a closed loop, including the source's internal voltage drop'.Expressed as per the original answer, we could also say; 'The algebraic sum of a circuit's electromotive force and voltage drops, including the source's internal voltage drop, is zero'.
What must voltage be?
Voltage is a measure of the E.M.F (electromotive force) which drives current around a circuit.
What are the forms of Kinetic energy.?
There is the kinetic energy you are familiar with, just moving around There is also electrical kinetic energy, the energy required to move electrons within a circuit this energy is also known as electromotive force of Voltage
What are the other forms of kinetic energy?
There is the kinetic energy you are familiar with, just moving around There is also electrical kinetic energy, the energy required to move electrons within a circuit this energy is also known as electromotive force of Voltage
How do you determine the voltage and current for circuit?
Voltage is "Unit of Measure"that how much of Electromotive force needed to move how many numbers of electrons in certain orbit with respect to the time is Volt. The tendency of electrons are being forced from their orbits around the nucleus in an atom by electromotive force is the Current flow
Define electromotive force?
A force that is created by charges or charge motion.AnswerAn electromotive force, by definition, is the open-circuit ( or 'no-load' ) potential difference created by charge separation within devices such as chemical cells, generators, etc. For a loaded circuit, the electromotive force of a source (by Kirchhoff's Voltage Law) is numerically equal to the algebraic sum of all the voltage drops around circuit, including any internal voltage drop within that source.Another AnswerElectromotive force is not a force. It is a traditional term used by physicists and engineers which is synonymous to a potential difference which charges travel through. Historically, it was initially believed that this force was provided by the inert characteristics of the potential. When this traditionally held standard was tested against clear and concise scientific data, gathered through careful experimentation, it is a generally accepted fact that the voltage ( or potential difference) is NOT a force.
What emf stands for?
Electromagnetic field (induces around the metal when current flows through it). Another opinion: Nope ! 'EMF' stands for 'Electromotive Force' . We refer to it casually as 'voltage'.
What is the difference between EMF and terminal PD?
An electromotive force is the potential differenceappearing across the terminals of a battery, generator, etc., when that device is not supplying any load. When the device is supplying a load current, the electromotive force is equal to the sum of the voltage drops around the complete circuit, including any internal voltage drop.A potential difference (also known as a 'voltage'), as the name implies, is the difference in potential between two points.
What is the difference between voltage and emf?
E.M.F: Is the potential difference between two terminals when there is no current i.e. circuit is open, therefore [EMF = OCV].OCV :open circuit voltage.Voltage: Is the potential difference between two terminals when there is current i.e. closed loopAnswerAn e.m.f. (electromotive force) is a voltage or, more accurately, a potential difference ('voltage' is simply another word for 'potential difference'). However, it is the potential difference that appears across the terminals of a supply when it is not connected to its load. When the supply is connected to a load, this potential difference falls because of an internal voltage drop across the supply's internal resistance. So the simple answer is that an electromotive force is a supply's open-circuit terminal voltage.Another definition is obtained from Kirchhoff's Voltage Law, from which we can say that an electromotive force is equal to the sum of all the all the voltage drops around the circuit, including its internal voltage drops.
What is Inductor transient response?
An inductor resists a change in current through the creation/destruction of the magnetic field around the inductor. In an IR Circuit, when the electromotive force (the battery voltage) changes, the inductor will create a voltage to oppose the change, causing the current flowing through the circuit to change gradually over time rather than instantaneously. In an ideal IR circuit, the induced voltage is initially equal and opposite to the change in electromotive force, and it decays exponentially, with a time constant proportional to the inductance of the circuit.
Do dry leather gloves have electrical resistance?
Yes, dry leather has an electrical resistance of around 100kOhm, enough to protect from residential voltage, but much less than what you would want for distribution voltage. However, the resistance of leather falls dramatically (up to 95%) when damp, so rubber gloves are always required when working around high voltage.
Is voltage electrical pressure?
Yes. If you compare the effect water pressure has on flow rates and from an open tap, more pressure allows more water to flow out of and away from the source. In electrical circuitry, an increase in voltage - say from a battery - will in most cases enable a larger current to flow around the circuit that the battery is connected to. Voltage can be seen as the pressure force pushing another quantity around the loop and that quantity is electrical current . Electrical pressure and the quantity of electricity transmitted can be considered analogous to water flowing in pipes. Electrical pressure is called voltage: the longer the distances, the higher is the pressure (voltage) required to pump the current. That is why, for long distance transmission, high pressure (voltage here) is required, failing which, the power will not reach the destined end. It will dissipate on the way. <><><> We can think of electrical current as the quantity of electricity which will be drawn from the pipeline (= cables for electricity) at the pressure (= voltage) required.
