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Testing a good diode with an ohmmeter should indicate:
- a)High resistance when forward or reverse biased
- b)Low resistance when forward or reverse biased
- c)High resistance when reverse biased and low resistance when forward biased
- d)High resistance when forward biased and low resistance when reverse biased.
Correct answer is option 'C'. Can you explain this answer?
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Testing a good diode with an ohmmeter should indicate high resistance when reverse biased and low resistance when forward biased.
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Introduction:
When testing a diode with an ohmmeter, the aim is to determine the behavior of the diode in both forward and reverse bias conditions. The ohmmeter measures the resistance of the diode, which can provide valuable information about its functionality.
Explanation:
To understand why option 'C' is the correct answer, let's break down the behavior of a diode in forward and reverse bias conditions and how it relates to the resistance measurement.
Forward Bias:
In forward bias, the positive terminal of the diode is connected to the anode, and the negative terminal is connected to the cathode. This configuration allows current to flow through the diode, and the diode behaves as a closed switch.
- When a diode is forward biased, it conducts current easily, and its resistance is low. This is because the forward bias voltage applied across the diode helps to overcome the barrier potential of the diode, allowing the majority charge carriers to flow through it freely.
- Consequently, when a good diode is tested with an ohmmeter in the forward direction, it should indicate a low resistance. This indicates that the diode is functioning correctly in the forward bias condition.
Reverse Bias:
In reverse bias, the positive terminal of the diode is connected to the cathode, and the negative terminal is connected to the anode. This configuration blocks current flow through the diode, and the diode behaves as an open switch.
- When a diode is reverse biased, it does not conduct current easily, and its resistance is high. This is because the reverse bias voltage applied across the diode increases the barrier potential, preventing the majority charge carriers from flowing through it freely.
- Consequently, when a good diode is tested with an ohmmeter in the reverse direction, it should indicate a high resistance. This indicates that the diode is functioning correctly in the reverse bias condition.
Conclusion:
Testing a good diode with an ohmmeter should indicate high resistance when reverse biased and low resistance when forward biased. This behavior confirms that the diode is functioning correctly and allows us to determine its polarity. By following this testing procedure, we can ensure the proper functionality of the diode and its suitability for various electrical and electronic applications.
When testing a diode with an ohmmeter, the aim is to determine the behavior of the diode in both forward and reverse bias conditions. The ohmmeter measures the resistance of the diode, which can provide valuable information about its functionality.
Explanation:
To understand why option 'C' is the correct answer, let's break down the behavior of a diode in forward and reverse bias conditions and how it relates to the resistance measurement.
Forward Bias:
In forward bias, the positive terminal of the diode is connected to the anode, and the negative terminal is connected to the cathode. This configuration allows current to flow through the diode, and the diode behaves as a closed switch.
- When a diode is forward biased, it conducts current easily, and its resistance is low. This is because the forward bias voltage applied across the diode helps to overcome the barrier potential of the diode, allowing the majority charge carriers to flow through it freely.
- Consequently, when a good diode is tested with an ohmmeter in the forward direction, it should indicate a low resistance. This indicates that the diode is functioning correctly in the forward bias condition.
Reverse Bias:
In reverse bias, the positive terminal of the diode is connected to the cathode, and the negative terminal is connected to the anode. This configuration blocks current flow through the diode, and the diode behaves as an open switch.
- When a diode is reverse biased, it does not conduct current easily, and its resistance is high. This is because the reverse bias voltage applied across the diode increases the barrier potential, preventing the majority charge carriers from flowing through it freely.
- Consequently, when a good diode is tested with an ohmmeter in the reverse direction, it should indicate a high resistance. This indicates that the diode is functioning correctly in the reverse bias condition.
Conclusion:
Testing a good diode with an ohmmeter should indicate high resistance when reverse biased and low resistance when forward biased. This behavior confirms that the diode is functioning correctly and allows us to determine its polarity. By following this testing procedure, we can ensure the proper functionality of the diode and its suitability for various electrical and electronic applications.
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Testing a good diode with an ohmmeter should indicate:a)High resistance when forward or reverse biasedb)Low resistance when forward or reverse biasedc)High resistance when reverse biased and low resistance when forward biasedd)High resistance when forward biased and low resistance when reverse biased.Correct answer is option 'C'. Can you explain this answer?
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Solutions for Testing a good diode with an ohmmeter should indicate:a)High resistance when forward or reverse biasedb)Low resistance when forward or reverse biasedc)High resistance when reverse biased and low resistance when forward biasedd)High resistance when forward biased and low resistance when reverse biased.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
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Testing a good diode with an ohmmeter should indicate:a)High resistance when forward or reverse biasedb)Low resistance when forward or reverse biasedc)High resistance when reverse biased and low resistance when forward biasedd)High resistance when forward biased and low resistance when reverse biased.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Testing a good diode with an ohmmeter should indicate:a)High resistance when forward or reverse biasedb)Low resistance when forward or reverse biasedc)High resistance when reverse biased and low resistance when forward biasedd)High resistance when forward biased and low resistance when reverse biased.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Testing a good diode with an ohmmeter should indicate:a)High resistance when forward or reverse biasedb)Low resistance when forward or reverse biasedc)High resistance when reverse biased and low resistance when forward biasedd)High resistance when forward biased and low resistance when reverse biased.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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