Assertion (A): A high resistance is connected in series with the galvanometer of meter bridge.
Reason (R ): As resistance increases, the current also increases.

Options

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is NOT the correct explanation of A
C. A is true but R is false
D. A is false and R is true

Explanation

To solve the given question, we will analyze the assertion and the reason step by step.

### Step 1: Analyze the Assertion (A)
**Assertion (A): A high resistance is connected in series with the galvanometer of the meter bridge.**

- In a meter bridge circuit, a galvanometer is used to measure current. If the galvanometer has a low resistance, it can be damaged by high currents. Therefore, a high resistance is connected in series with the galvanometer to limit the current flowing through it. This is done to protect the galvanometer from damage due to excessive current.

**Conclusion for Assertion (A):** The assertion is **True**.

### Step 2: Analyze the Reason (R)
**Reason (R): As resistance increases, the current also increases.**

- According to Ohm's Law, the relationship between voltage (V), current (I), and resistance (R) is given by the formula:
\[ V = I \times R \]
Rearranging this gives:
\[ I = \frac{V}{R} \]
From this equation, we can see that if the resistance (R) increases while the voltage (V) remains constant, the current (I) will actually decrease. Therefore, the statement that "as resistance increases, the current also increases" is incorrect.

**Conclusion for Reason (R):** The reason is **False**.

### Final Conclusion
- Since the assertion (A) is true and the reason (R) is false, the correct answer is option 3: **A is true but R is false.**