*Question G6B05:
What is an advantage of using a ferrite core toroidal inductor?*  

*Correct Answer is  D: All these choices are correct*  

### AI Response: (may contain errors)  

A ferrite core toroidal inductor has several advantages, which are all captured in the correct answer: "All these choices are correct." Let's break down why each choice is correct:

1. **Large values of inductance may be obtained (Choice A):**  
   Ferrite cores have high magnetic permeability, which allows inductors to achieve large inductance values in a relatively small size. This is because the core material enhances the magnetic field, increasing the inductance.

2. **The magnetic properties of the core may be optimized for a specific range of frequencies (Choice B):**  
   Ferrite materials can be engineered to have specific magnetic properties that are optimal for certain frequency ranges. This makes them versatile for use in various applications, from low-frequency power supplies to high-frequency RF circuits.

3. **Most of the magnetic field is contained in the core (Choice C):**  
   The toroidal shape of the core helps to confine the magnetic field within the core material. This reduces electromagnetic interference (EMI) with nearby components and improves the efficiency of the inductor.

Since all these statements are true, the correct answer is "All these choices are correct" (Choice D). Each choice highlights a distinct advantage of using ferrite core toroidal inductors, making them a popular choice in many electronic applications.