The resistance of an ideal diode in forward biased condition is

Options

A. zero
B. infinity
C. finite
D. negative

Answer

To determine the resistance of an ideal diode in a forward-biased condition, we can follow these steps:

### Step 1: Understand the concept of forward biasing
In a forward-biased condition, the P-type semiconductor (anode) is connected to the positive terminal of the power supply, and the N-type semiconductor (cathode) is connected to the negative terminal. This configuration allows current to flow through the diode.

**Hint:** Remember that forward biasing allows current to flow easily through the diode.

### Step 2: Analyze the behavior of an ideal diode
An ideal diode is a theoretical concept where the diode has perfect characteristics. In this scenario, when the diode is forward-biased, it behaves like a short circuit. This means that it allows current to pass through without any resistance.

**Hint:** Think of an ideal diode as a perfect conductor when it is forward-biased.

### Step 3: Determine the resistance in the ideal case
Since the ideal diode behaves like a short circuit in forward bias, the resistance offered by the diode is considered to be zero. This is because, in a short circuit, the voltage across the circuit is zero while current can flow freely.

**Hint:** Recall that resistance (R) is defined as R = V/I. If V (voltage across the diode) is zero, then R must also be zero.

### Step 4: Conclusion
Therefore, the resistance of an ideal diode in a forward-biased condition is zero.

**Final Answer:** The resistance of an ideal diode in forward-biased condition is **0**.