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When the polarity of the battery is such that electrons are allowed to flow through the diode,then the diode is said to be forward-biased. Conversely, when the battery is "backward" and the diode blocks current, then the diode is said to be reverse-biased. A diode may be thought of as like a switch: "closed" when forward-biased and "open" when reverse-biased.

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12y ago
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14y ago

Forward biasing means to give the p-region of a p-n junction higher potential w.r.t the n-region. Thus the potential barrier for an electron is reduced. so they can easily diffuse across the junction.Similarly holes move through the n-region into the negative terminal of the source.this constitutes a current (diffusion current)

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14y ago

When you forward bias a diode it is "on". Assuming you do not exceed its maximum current flow, its voltage drop will be (relatively) constant as related to current.

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10y ago

when the positive terminal of the battery is connected to the anode and negative terminal of the battery is connected to cathode then the diode is in forward bias

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11y ago

The condition to make a diode forward bais is that a positive voltage should be applied at the anode and should be greater than the thresh hold voltage (potential barrier) of the diode.

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Q: Describe forward bias of a diode?
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when the positive terminal of the battery is connected to the positive terminal of the diode it is said to be in forward bias


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