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Electromotive force is usually provided by a what or what in an electric circuit?
Wiki User
∙ 14y ago
it is usually provided by a battery or generator.
Wiki User
∙ 14y ago
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What supplies electric pressure in an automotive circuit?
The battery and the alternator.The "electrical pressure" probably refers to the voltage. This is usually provided by a battery. The battery is recharged by the engine when it is running.
Define voltage in electrical?
Voltage (of a circuit) as defined in the NEC: n. The greatest root-mean-square(rms) (effective) difference of potential between any two conductors of the circuit concerned. Voltage as defined by Webster's: n. Electromotive force or potential difference, usually expressed in volts.
What is ampere turn formula?
Magnetomotive force establishes magnetic flux in a magnetic circuit, which is opposed by the reluctance of that circuit. It's easy to relate these magnetic quantities to the equivalent quantities in an electric circuit:magnetomotive force is equivalent to electromotive forceflux is equivalent to currentreluctance is equivalent to resistanceA magnetomotive force (mmf) is created whenever an electric current passes through a coil. It's magnitude is determined by the product of the current (I) flowing through the coil and the number of turns (N): mmf = I NThe unit of measurement of magnetomotive force is the ampere. Although, to prevent it from being confused with the unit of measurement for current, it is usually spoken as "ampere turn".
What is a ring circuit?
Usually,there are many mains sockets in a flat to provide electricity for electrical appliances.Do you know how these mains sockets are connected to the electric cable that carries electricity to the flat? The electric cable that carries electricity to a flat is connected to the consumer unit.In the consumer unit,the electric cable branches into a number of parallel circuits that deliver electricity to ceiling lamps,mains sockets,air conditioners(or other appliances with high working current),etc.The circuit that delivers electricity to main sockets exists in form of a ring and is therefore called a ring circuit. The ring circuit provides two paths for electric current to flow from the consumer unit to the mmain sockets.Each path only carries half of the electric current.Therefore,the chance of overloading the circuit is reduced.Besides,if one of the paths is damaged,there's still another path for carrying electric current.
What are the factors that may change the electromotive force in any circuit?
Electromotive force (emf, ) is a term used to characterize electrical devices, such as voltaic cells, thermoelectric devices, electrical generators and transformers, and even resistors. For a given device, if an electric charge Q passes through that device, and gains an energy W, the net emf for that device is the energy gained per unit charge, or W/Q. This has SI units of volts, or joules per coulomb, and hence can be thought of as a voltage induced by the device in question. Since force has the SI unit of the Newton, "electromagnetic force" is a misnomer, but one that over time has resisted change. In most circuits current is driven by a so-called "source of emf", which usually is a voltaic cell (or battery, which consists of voltaic cells in series and/or in parallel) or the power company. For a voltaic cell the source of emf is the chemical reactions that occur at each of the electrode-electrolyte interfaces, so that a voltaic cell can be thought of as two "surface pumps" of atomic dimension. The reactions at the electrode-electrolyte interfaces provide the "seat" of emf for the voltaic cell. For the power company, the source of emf is electromagnetic induction, which is more extended than an atomic size, but nevertheless is confined to the power generation building, usually many miles from the user. Sources of electromotive force include electric generators (both alternating current and continuous current types), batteries, and thermocouples (in a heat gradient). Electromotive force is often denoted by or ℰ (script capital E). Electromotive force is measured in volts (in the International System of Units equal in amount to a joule per coulomb of electric charge). Electromotive force in electrostatic units is the statvolt (in the centimeter gram second system of units equal in amount to an erg per electrostatic unit of charge).
Electromotive force is usually provided by a?
It is usually provided by a battery or generator.
When does the electric current flow?
An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).An electric current will flow if there is a voltage, and a conducting path (usually a closed circuit is required).
What part in an electric circuit opens and closes the circuit?
A switch, switching transistor, or circuit breaker usually does.
What supplies electric pressure in an automotive circuit?
The battery and the alternator.The "electrical pressure" probably refers to the voltage. This is usually provided by a battery. The battery is recharged by the engine when it is running.
What does circuit mean in science?
circuit means a closed path followed or capable of being followed by an electric currents
What makes electricityflow in a circut?
To analyze a circuit, you will usually consider a voltage to be the "moving force" - also known as electromotive force, but please note that it does not have units of a force, so it isn't technically a force.At the level of individual charge carriers, such as electrons, those will be subject to electric forces.
What is the name of a series circuit?
An electric circuit connected so that current passes through each circuit element in turn without branching.
What flows through a circuit and causes a magnetic field?
An electric current flowing through a circuit causes a magnetic field. This is due to the movement of electric charges, usually electrons, in the circuit. The magnetic field produced is perpendicular to the direction of the current flow.
What is a current circuit?
A current circuit refers to a closed path through which electric current flows. It is formed by connecting various electrical components, such as resistors, capacitors, and inductors, with conducting wires. The current circuit allows the flow of electric charges, usually in the form of electrons, from the power source to the load.
What is the abbreviation for volts?
V. Voltage is also sometimes abbreviated E, usually in Ohm's Law equations. The E stands for electromotive force.
Where the circuit breakers are located?
If your circuit breakers are in the garage, they would be in a electrical panel (a metal box mounted on a (usually) outside wall, with the electric meter on the outside. The circuit breakers can be either just below the meter on the outside on opposite it inside the garage. It would usually be very close to where the electric connection to the house is. The electrical panel and breakers are not necessarily in the garage.
What is the formula for potential energy in an electrical system?
In an electric circuit, potential energy is usually understood as "stored charge." This is what capacitors do.
