On increasing the resistance in a circuit, the current in it:

Options

A. decreases
B. increases
C. remains unchanged
D. nothing can be said

Answer

To solve the question "On increasing the resistance in a circuit, the current in it:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ohm's Law**:
- Ohm's Law states that \( V = I \times R \), where \( V \) is the voltage (potential difference), \( I \) is the current, and \( R \) is the resistance.

2. **Identify the Relationship**:
- From Ohm's Law, we can rearrange the formula to express current in terms of voltage and resistance:
\[ I = \frac{V}{R} \]
- This shows that current \( I \) is inversely proportional to resistance \( R \) when the voltage \( V \) is constant.

3. **Consider the Effect of Increasing Resistance**:
- If we increase the resistance \( R \) while keeping the voltage \( V \) constant, the current \( I \) will change according to the formula:
\[ I = \frac{V}{R} \]
- As \( R \) increases, the denominator of the fraction increases, which means that \( I \) must decrease.

4. **Conclusion**:
- Therefore, when the resistance in a circuit is increased, the current in the circuit decreases.

### Final Answer:
- The correct option is: **Option 1: Decreases**.