A : A low voltage supply from which high currents are to be withdraw , must have very low internal resistance .
R : Maximum current drawn from a source is inversely proprtional to internal reisistance .

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion , then mark
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark.
C. If Assertion is ture statement but Reason is false , then mark
D. If both Assertion and Reason are false statements then mark.

Answer

To solve the question, we need to analyze the assertion (A) and the reason (R) provided.

### Step 1: Understand the Assertion (A)
The assertion states that "A low voltage supply from which high currents are to be withdrawn must have very low internal resistance."

- **Explanation**: For a low voltage supply, if we want to draw a high current, the internal resistance must be low. This is because high current can only be achieved if the resistance does not limit the flow of current significantly.

### Step 2: Understand the Reason (R)
The reason states that "Maximum current drawn from a source is inversely proportional to internal resistance."

- **Explanation**: According to Ohm's Law, \( V = I \times R \), we can rearrange this to find the current \( I \):
\[ I = \frac{V}{R} \]
From this equation, we can see that if the voltage \( V \) is constant, the current \( I \) is inversely proportional to the resistance \( R \). This means that as the resistance decreases, the current increases, which supports the assertion.

### Step 3: Verify Both Statements
Now we need to determine if both the assertion and the reason are true and if the reason correctly explains the assertion.

- **Assertion (A)**: True. A low voltage supply indeed requires low internal resistance to allow high currents to flow.
- **Reason (R)**: True. The reason correctly states that maximum current is inversely proportional to internal resistance.

### Step 4: Conclusion
Since both the assertion and the reason are true, and the reason provides a correct explanation for the assertion, we conclude that:

**Final Answer**: Both assertion and reason are true, and the reason is the correct explanation of the assertion.