Question:
Consider the following statements:
Statement (A): The resistance of an ideal diode in forward biased condition is zero.
Statement (B): In a half wave rectifier, the load current flows only for every half cycle of the input signal.
Statement (C): In the breakdown region, a zener diode behaves as a constant voltage source.
Consider the following statements:
Statement (A): The resistance of an ideal diode in forward biased condition is zero.
Statement (B): In a half wave rectifier, the load current flows only for every half cycle of the input signal.
Statement (C): In the breakdown region, a zener diode behaves as a constant voltage source.
Statement (A): The resistance of an ideal diode in forward biased condition is zero.
Statement (B): In a half wave rectifier, the load current flows only for every half cycle of the input signal.
Statement (C): In the breakdown region, a zener diode behaves as a constant voltage source.
Show Hint
Remember:
\[
\text{Ideal forward biased diode } \Rightarrow R=0
\]
\[
\text{Half-wave rectifier } \Rightarrow \text{conduction during one half cycle only}
\]
\[
\text{Zener diode in breakdown region } \Rightarrow \text{approximately constant voltage}
\]
These are standard assumptions frequently used in electronic devices and circuits.
Updated On: Jun 26, 2026
- A, B & C are all true
- A, B are true but C is false
- A, C are true but B is false
- B, C are true but A is false
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Analyze Statement (A).
Statement (A) says that the resistance of an ideal diode in forward biased condition is zero.
An ideal diode behaves as a perfect conductor when forward biased. Therefore, \[ V=0 \] for any finite current flowing through it. Hence, \[ R=\frac{V}{I}=0 \] Thus, Statement (A) is true.
Step 2: Analyze Statement (B).
A half wave rectifier allows current to pass only during one half of the AC input cycle and blocks the current during the other half cycle.
Therefore, the load current flows only during every alternate half cycle of the input AC signal.
Hence, Statement (B) is true.
Step 3: Analyze Statement (C).
A zener diode is specially designed to operate in the reverse breakdown region.
In the breakdown region, even if the current changes over a wide range, the voltage across the zener diode remains nearly constant and equal to the zener voltage.
Therefore, a zener diode behaves as a constant voltage source (or voltage regulator) in its breakdown region.
Hence, Statement (C) is true.
Step 4: Determine the correct option.
We find that Statement (A) = True Statement (B) = True Statement (C) = True Therefore, all three statements are correct.
Step 5: Final conclusion.
Hence, \[ \boxed{\text{A, B \& C are all true}} \] and the correct option is \[ \boxed{(1)} \]
Statement (A) says that the resistance of an ideal diode in forward biased condition is zero.
An ideal diode behaves as a perfect conductor when forward biased. Therefore, \[ V=0 \] for any finite current flowing through it. Hence, \[ R=\frac{V}{I}=0 \] Thus, Statement (A) is true.
Step 2: Analyze Statement (B).
A half wave rectifier allows current to pass only during one half of the AC input cycle and blocks the current during the other half cycle.
Therefore, the load current flows only during every alternate half cycle of the input AC signal.
Hence, Statement (B) is true.
Step 3: Analyze Statement (C).
A zener diode is specially designed to operate in the reverse breakdown region.
In the breakdown region, even if the current changes over a wide range, the voltage across the zener diode remains nearly constant and equal to the zener voltage.
Therefore, a zener diode behaves as a constant voltage source (or voltage regulator) in its breakdown region.
Hence, Statement (C) is true.
Step 4: Determine the correct option.
We find that Statement (A) = True Statement (B) = True Statement (C) = True Therefore, all three statements are correct.
Step 5: Final conclusion.
Hence, \[ \boxed{\text{A, B \& C are all true}} \] and the correct option is \[ \boxed{(1)} \]
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