Differentiate between AC and DC by giving two points .

Explanation

To differentiate between Alternating Current (AC) and Direct Current (DC), we can highlight two key points:

### Step-by-Step Solution:

1. **Direction of Flow**:
- **AC (Alternating Current)**: The direction of AC changes periodically. It flows in one direction for a certain period and then reverses its direction.
- **DC (Direct Current)**: The direction of DC remains constant. It flows in a single direction without changing.

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