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Cells and batteries.
A more detailed answer
In general, most power supply sources - including cells and batteries - cannot supply either a truly constant current or voltage.
Because most load devices are designed to require a nearly constant voltage - and not a specific constant current. - most power supplies - including cells and batteries - are designed to supply a given output voltage whatever the current that is being drawn, provided of course that the current stays within a pre-determined designed range of output current values.
One definition of "constant current source" is that it has zero output resistance, which in practice cannot exist.
However, a transistor can act as a constant current source if biased and used in that manner. This can also be done using one of the several standard "voltage regulator" components - which are available from electronics parts suppliers - because they can be hooked-up to act as constant current sources to operate over a small range.
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Name one household items that use a battery as a source of electric current?
Alarm Clock Hair Dryer Disco Ball A lot of things.
What is the part of a circuit that connects or disconnects the circuit?
Switches, fuses and circuit breakers are examples of some of the electrical parts which can connect or disconnect a circuit to a source of current. A diode does it for alternating current, but only for one half of each cycle. "Connecting" allows an electric current to flow through the circuit. "Disconnecting" stops an electric current from flowing through the circuit.
How current electricity moves in a circuit?
You need a source of electrical potential difference, also known as voltage (which is the technical term for what for you call "electric pressure"). The easiest and most common voltage source is a household battery. Hook up the positive electrode of the battery using a conductor (eg. a copper wire) to one end of your circuit and the negative electrode to the other end, and voila, you'll have electric current flowing through your circuit.
How does a inductor or capacitor returns power to circuit?
A: Current flow only if there is a return path to the source it does not matter what it is connected to. What leaves at one end of the source will be identical to the return in current
Why does electric current flow into circuits?
It may not be correct to say that an electric current will "flow into" circuits. Electrons move in a circuit in response to an applied voltage. And these electrons are alread in the circuit and available to support current flow if a voltage is applied. It may be more correct to say that electrons leave the negative terminal of a voltage source, and electrons enter the positive terminal of that voltage source. The electrons in the circuit that are availble to support current flow will "shift over" to create the current flow. Remember that the phenomenon of current flow in a wire is the "shifting over" of electrons in the wire. It's not about electrons going into one end of a wire and those same electrons coming out the other end. Use the link to the related question for more information that might help make things clearer.
One source of constant electric current is a?
Alah
Is a transformer one source of constant electric current?
A; Terminology is not correct a transformer is not really a source but rather a device to transform one source of power to some power that can be used as required minus efficiency of power transfer
Is a transformer a source of constant electric current?
A; Terminology is not correct a transformer is not really a source but rather a device to transform one source of power to some power that can be used as required minus efficiency of power transfer
What is the path for transmitting electric currents?
Electric currents flow from the source through the circuit and back to the source in materials called conductors.
How does static electric differ from current electric?
Static electricity is a charge that is stored in a medium until it finds a way to discharge itself to a ground source .. scuffing your feet on a rug , socks help , will build a charge in you until you touch something ,, brother, door knob , lightening is a static charge, a capacitor uses a static charge Electric current is a constant flow of electricity from one place, a source thru a circuit and back to the source .. a battery is made to cause this flow thru chemical action .. the power in your house has various circuits that carry the electrical current flow thru the devices and appliances in your home
Can an electric current generate an electromagnetic wave?
Not a constant electric current but a changing one will generate electromagnetic waves.First: If you have a lone electron, and it is accelerated in any way, it will send off an electromagnetic wave. This is because a changing electric field generates a magnetic field.It is also true that changing magnetic field will generate an electric field. This is the reason that if you have an electric current, which is generating a magnetic field, and you change the current you generate an electromagnetic wave. To generate a continuous sinusoidal electromagnetic wave you continuously change the current sinusoidally.
What current flows in one direction while anther remains constant?
In one direction - or constant - is called direct current. The other sort is called alternating current.
Name one household items that use a battery as a source of electric current?
Alarm Clock Hair Dryer Disco Ball A lot of things.
What is DC current?
Direct Current (DC) is an electric current flowing in one direction only.For the source and more detailed information concerning this subject, click on the related links section indicated below.
What is the formula of getting leakage current?
There are several formulas to find out leakage current, but one is the general electric current equation. This electric current equation is I=Qt.
What does a current and coulomb have in common?
A coulomb is the charge caused by a constant current of one ampere (what current is measured in) in one second.
What is the part of a circuit that connects or disconnects the circuit?
Switches, fuses and circuit breakers are examples of some of the electrical parts which can connect or disconnect a circuit to a source of current. A diode does it for alternating current, but only for one half of each cycle. "Connecting" allows an electric current to flow through the circuit. "Disconnecting" stops an electric current from flowing through the circuit.
