A p-n diode is used in a half wave rectifier with a load resistance of `1000 Omega `. If the forward resistance (`r_f`) of diode is `10 Omega `, calculate the efficiency of this half wave rectifier.

Explanation

To calculate the efficiency of a half-wave rectifier using a p-n diode, we can follow these steps:

### Step 1: Understand the Given Values
We have the following values provided:
- Load resistance, \( R_L = 1000 \, \Omega \)
- Forward resistance of the diode, \( R_f = 10 \, \Omega \)

### Step 2: Write the Efficiency Formula
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