*Question T5D06:
What is the resistance of a circuit that draws 4 amperes from a 12-volt source?*  

*Correct Answer is  A: 3 ohms*  

### AI Response: (may contain errors)  

To find the resistance of a circuit that draws 4 amperes from a 12-volt source, we can use Ohm's Law, which states:

$$
V = I \times R
$$

where:
- $V$ = voltage in volts
- $I$ = current in amperes
- $R$ = resistance in ohms

We can rearrange this formula to solve for resistance:

$$
R = \frac{V}{I}
$$

Substituting the given values:

$$
R = \frac{12 \text{ volts}}{4 \text{ amperes}} = 3 \text{ ohms}
$$

### Explanation of the Correct Answer:
- The correct answer is **3 ohms** because we calculated the resistance using the values provided (12 volts and 4 amperes) and applied Ohm's Law correctly.

### Explanation of Incorrect Choices:
- **A: 3 ohms** (Correct)
- **B: 16 ohms**: This would imply a current of $I = \frac{12 \text{ volts}}{16 \text{ ohms}} = 0.75 \text{ amperes}$, which does not match the given current of 4 amperes.
- **C: 48 ohms**: This would imply a current of $I = \frac{12 \text{ volts}}{48 \text{ ohms}} = 0.25 \text{ amperes}$, which is also incorrect.
- **D: 8 ohms**: This would imply a current of $I = \frac{12 \text{ volts}}{8 \text{ ohms}} = 1.5 \text{ amperes}$, which does not match the given current of 4 amperes.

### Summary:
- Use Ohm's Law to find resistance: $R = \frac{V}{I}$.
- The correct resistance for a circuit drawing 4 amperes from a 12-volt source is 3 ohms.