A forward-biased p-n junction is an electronic device that consists of a p-type and n-type semiconductor material joined together. When a voltage is applied across the junction in a forward direction, meaning the positive terminal is connected to the p-type material and the negative terminal is connected to the n-type material, current flows easily through the device.
The process of forward biasing a p-n junction involves reducing the potential barrier at the junction, allowing current to flow more freely. When a voltage is applied, the positive terminal attracts electrons from the n-type material while the negative terminal attracts holes from the p-type material. This movement of charges results in a flow of current through the device.
One of the key characteristics of a forward-biased p-n junction is its low resistance. The forward biasing process reduces the potential barrier at the junction, which in turn decreases the resistance of the device. This allows a large amount of current to flow through the device with very little voltage applied.
Another characteristic of a forward-biased p-n junction is its voltage-current relationship. The current flowing through the device is directly proportional to the voltage applied across it. As the voltage is increased, the current flowing through the device also increases. This relationship can be described by Ohm's law, which states that the current flowing through a device is equal to the voltage applied across it divided by its resistance.
In addition to its use in electronic circuits, forward-biased p-n junctions also play an important role in the operation of photovoltaic cells. These devices use a p-n junction to convert light energy into electrical energy. When light strikes the p-n junction, it causes electrons and holes to move across the junction, creating a flow of current. By connecting multiple p-n junctions together, photovoltaic cells can generate a significant amount of electrical power.
In this video u will learn about the " Forward Biased P-N Junction " in Urdu from 2nd year Physics chapter number 18. If you have any questions then plz comment down below. Thanks.
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