Best Answer

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.

2009-05-20 17:40:29
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: Why is the current in diodes only due to diffusion and not influenced by electric field of batteries?
Write your answer...

Related Questions

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).

Which of the following is a source of direct electric 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)

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.)

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".

Are batteries electricity?

Yes batteries are a form of electricity know as DC or Direct Current. Direct current is produced by such sources as batteries ,thermocouple's cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also be through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric charge flows in a constant direction, distinguishing it from alternating current or AC.

What did the first battery do?

Basically the same as later batteries - store energy, and release it in form of an electric current.

The current in an electric motor comes from?

Power plants (fueled by elements) produce the electrical energy that circuits to an outlet that you can charge an electric motor with a plug that is wired to an electric motor. Or if it is a vehicle with an electric motor, you electrically charge car batteries that produce the current to the electric motor.

What is the definition of diffusion current?

Diffusion current is current that is generated due to the vibration of electrons.

What type of current will batteries provide?

Batteries are DC current.

What kind of current are most batteries?

Batteries are DC current.

What is the current flowing in an electric bulb Is it alternating or direct current?

The current flowing in a normal household lighting electric bulb is AC. DC systems are just a fraction of 1% in ordinary household systems.The current flowing in a flashlight bulb is Direct Current (DC) if the flashlight runs on batteries.

Why do batteries only supply direct current?

The nature of the chemical reactions taking place in a battery cause electric current to flow only in one direction.

Is there any electric current in the battery not yet placed in the car?

Yes, all batteries are fully charged when the leave the factory.

What is the difference between limiting current and diffusion current?

The limiting current is defined as the limiting value of a current that is approached as the rate of charge-transfer to an electrode is increased. The diffusion current is defined as a current in a semiconductor caused by the diffusion of holes and/or electrons.

How solar car works?

I think they have Photovoltic cells that produce a DC current from sun light to charge batteries, then the batteries power an electric motor that turns the wheels to power the vehicle.

What is an elecrical current?

Electric current is a type of electricity that flows threw matter for example when some one attaches wires to batteries and a light bulb lights up

Is batteries alternative current or directly current?

Batteries store DC, or Direct Current. The correct term for AC is Alternating Current.

Example of direct current?

The current produced by batteries is direct current. Electronic devices need direct current; in this case, they need a power supply (often built into the electronic device itself), that converts the alternating current, from the electric outlet, to direct current.

What is the difference between mains and batteries?

The mains are AC, alternating current.Batteries are DC, direct current.

Advantages of ion implantation over diffusion?

Doping levels can be precisely controlled since the incident ion beam can be accurately measured as an electric current.

How is electricity stored in batteries?

Actually electricity is not stored in batteries but some chemicals are stored in it. When the chemicals are made to react, the reaction creates a potential difference between the two terminals and electric current is made to flow.