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Voltage and Current (V-I)characteristics of many devices are useful to know the nature of the device. Here are some V-I characteristics
1) Resistor : Its a linear device whose V-I curve is a straight line passing through the origin. It implies that as the voltage increase the current also increases for resistors.
3) Voltage source: It is a non linear device.
4) Current source: Its a non linear device.
Linear devices are having a straight line passing through the origin.
Non linear devices does not have a line passing through origin.
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| Diode |
2) Diode: Diode is a non linear device, which allows the flow of current only in one direction(in forward bias) and does not allow the flow of current in reverse bias condition.
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| Voltage source |
3) Voltage source: It is a non linear device.
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| Current source |
4) Current source: Its a non linear device.
Linear devices are having a straight line passing through the origin.
Non linear devices does not have a line passing through origin.
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