NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Semiconductors
NEET · Physics · Semiconductors
Consider the following statements Statement (A) The resistance of...
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 signals.
Statement (C) In the breakdown region, a zener diode behaves as a constant voltage source.
Options
- A and are all true.
- B true but is false.
- C true but is false.
- D true but is false.
Correct answer
A. and are all true.
Step-by-step solution
In an ideal diode graph in forward bias is
So, forward resistance, In a half wave rectifier diode resists negative half of input cycle. Hence, current only flows for positive half cycle. When breakdown occurs, potential drop across zenner diode becomes constant. Hence, it acts as a constant voltage source. Hence, all statements are correct.
So, forward resistance, In a half wave rectifier diode resists negative half of input cycle. Hence, current only flows for positive half cycle. When breakdown occurs, potential drop across zenner diode becomes constant. Hence, it acts as a constant voltage source. Hence, all statements are correct.