*Question T5B07:
Which is equal to 3.525 MHz?*  

*Correct Answer is  C: 3525 kHz*  

### AI Response: (may contain errors)  

To convert frequencies between different units, it's important to remember the relationships between hertz (Hz), kilohertz (kHz), and megahertz (MHz):

- $1 \text{ MHz} = 1,000 \text{ kHz}$
- $1 \text{ kHz} = 1,000 \text{ Hz}$

Now, let's analyze the question:

**Correct Answer: 3525 kHz**

To convert 3.525 MHz to kHz:
$$
3.525 \text{ MHz} = 3.525 \times 1,000 \text{ kHz} = 3525 \text{ kHz}
$$
This shows that 3.525 MHz is indeed equal to 3525 kHz.

**Why the other choices are incorrect:**

- **Choice A: 0.003525 kHz**
  - This is incorrect because converting 3.525 MHz to kHz gives a much larger value, not a smaller one. 
  - The conversion would be:
  $$
  3.525 \text{ MHz} = 3.525 \times 1,000 = 3525 \text{ kHz}
  $$

- **Choice B: 35.25 kHz**
  - This is also incorrect. It is a miscalculation of the conversion. 
  - The correct conversion is:
  $$
  3.525 \text{ MHz} = 3525 \text{ kHz}
  $$

- **Choice D: 3,525,000 kHz**
  - This is incorrect because it misrepresents the value by adding an extra factor of 1,000. 
  - The correct conversion is:
  $$
  3.525 \text{ MHz} = 3525 \text{ kHz} \neq 3,525,000 \text{ kHz}
  $$

**Summary:**
- The correct conversion from MHz to kHz is straightforward: multiply by 1,000.
- Always double-check your conversions to avoid common pitfalls.