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Why is the current in diodes only due to diffusion and not influenced by electric field of batteries?
Wiki User
∙ 14y ago
In diodes there are two types of current namely diffusion and drift current. Former one is due to concentration gradient of majority carriers (hole in p side n electron in n-side). Due to this difference of concentration of carriers majority carrier start to diffuse in other side. The amount of diffusion is just depends on concentration. Contrast to this, drift current which is very small in compare to diffusion current depends on the applied voltage across the diode. Since total current is mainly due to diffusion in forward biased hence it is not too much effected by battery's electric field. I dint know that batteries have electric field. INTERESTING.
Wiki User
∙ 14y ago
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Does drift current depends on carrier concentration?
no,drift current depends upon electric field where as carrier concentration lead to diffusion current
What is definition of diffusion current?
The diffusion current in a metal-semiconductor diode is derived based on the assumption that the depletion layer is large compared to the mean free path, so that the concepts of drift and diffusion are valid.
The flow of electric charges is called?
The flow of electric charges is current.
Why electric current across a wire drops?
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
What allows the current to enter the electronromagnet in an electric motor?
The resistor allows current to enter the electromagnet in an electric motor. The resistor regulates the amount of current that enters the electric motor.
In an electrode-electrolyte circuit what do the terms drift current and diffusion current mean?
A drift current is electric charges being moved in the presence of an electric field, and a diffusion current is electric charges being moved by a chemical diffusion gradient (where no electric field exists, but where there is a concentration gradient of chemical species driving the current).
What devices have the ability to store current?
Batteries and capacitors store electric charge.
Does drift current depends on carrier concentration?
no,drift current depends upon electric field where as carrier concentration lead to diffusion current
What matter has the ability to carry an electric current?
An electrical conductor has the ability to carry an electric current. Most of the best conductors are metals such as copper. Water containing ions can also conduct an electric current (which lead-acid batteries rely on)
How do you turn a battery operated water fountain into an electric one?
A BATTERY OPERATED FOUNTAIN IS AN ELECTRIC FOUNTAIN. IT IS NOT ALTERNATING CURRENT AS IN HOSEHOLD POWER, BUT DC CURRENT. There are many DC power supplies that will substitute for the batteries. The voltage necasary is determind by the motor requirment. Not a problem. The question is somewhat faulty. Are batteries not electric?
What are things like batteries which provide energy called?
Generators or storage devices for electric charge which they can release as a "flow of charge" called an "electric current".
What are three things that can run on direct current batteries?
flashlight toy car laser pointer electric wristwatch portable radio hiker's GPS walkie-talkie RC boat smartphone .mp3 player electric car Orthogonal configurators can only run on alternating current batteries. (That's why there are so few orthogonal configurators ... there is no such thing as alternating current batteries.)
What did the first battery do?
Basically the same as later batteries - store energy, and release it in form of an electric current.
What is the definition of diffusion current?
Diffusion current is current that is generated due to the vibration of electrons.
What are 3 examples of electrical energy?
. lightning . batteries . energy generated by electric eels
What kind of current are most batteries?
Batteries are DC current.
What type of current will batteries provide?
Batteries are DC current.
