Which of the following statemtent is not true?
Correct answer: B. Semiconductor diode are ohmic devices
- A. Conductance is the reciprocal of resistance and is measured in siemens
- B. Semiconductor diode are ohmic devices
- C. Ohm's law is not applicable at very low and very high temperatures
- D. Ohm's law is not applicable to electron tubes, discharge tubes
Explanation
Semiconductor diode is non-ohmic device.A diode is a two-terminal semiconductor device that acts like a one-way valve for electric current, allowing it to flow easily in one direction (forward bias) but blocking it in the opposite direction (reverse bias)
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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