Which of thoe folowing option is correct

Options

A. The total number of charged particles in the universe remains conserved
B. The magnitude of total positive charge of the universe is constant
C. The magnitude of total negative charge of the universe is constant
D. The total charge of the universe is constant

Answer

To solve the question regarding which of the following options is correct about the nature of charge in the universe, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Charge Conservation**:
- The principle of charge conservation states that the total charge in an isolated system remains constant. This means that charge cannot be created or destroyed, only transferred from one object to another.

2. **Analyzing Option A**:
- **Option A**: "The total number of charged particles in the universe remains constant."
- When two uncharged objects (like a cloth and a glass rod) are rubbed together, they exchange electrons. This means that new charged particles are created from uncharged ones. Thus, the total number of charged particles can change, making this option incorrect.

3. **Analyzing Option B**:
- **Option B**: "The magnitude of total positive charge of the universe is constant."
- As we can create positive charge by removing electrons (as in the case of the glass rod becoming positively charged), the total magnitude of positive charge can change. Therefore, this option is also incorrect.

4. **Analyzing Option C**:
- **Option C**: "The magnitude of total negative charge of the universe is constant."
- Similar to option B, we can create negative charge by adding electrons (as in the case of the cloth becoming negatively charged). Thus, the total magnitude of negative charge can also change, making this option incorrect.

5. **Analyzing Option D**:
- **Option D**: "The total charge of the universe is constant."
- This option aligns with the principle of charge conservation. While individual positive and negative charges can vary, the total charge (which is the sum of positive and negative charges) remains constant. For every positive charge created, an equal negative charge is also created, keeping the total charge balanced. Therefore, this option is correct.

### Conclusion:
The correct option is **D: The total charge of the universe is constant**.