Which is not a vector quantity?

Options

A. Current
B. Displacement
C. Velocity
D. Acceleration

Explanation

To determine which of the given options is not a vector quantity, we will analyze each option based on the definition of vector quantities.

### Step 1: Understand Vector Quantities
Vector quantities are those that have both magnitude and direction. Examples include displacement, velocity, acceleration, and force.

### Step 2: Analyze Each Option
1. **Current**: Electric current is defined as the flow of electric charge and is a scalar quantity. It has magnitude but does not have a specific direction in the same way that displacement or velocity does.

2. **Displacement**: Displacement is the shortest distance from the initial to the final position of an object and has both magnitude and direction. It is a vector quantity.

3. **Velocity**: Velocity is the rate of change of displacement and has both magnitude and direction. It is also a vector quantity.

4. **Acceleration**: Acceleration is the rate of change of velocity and has both magnitude and direction. It is a vector quantity.

### Step 3: Conclusion
From the analysis above, we can conclude that:
- Current is the only quantity among the options that does not have a direction associated with it in the same way as the others.

Thus, the correct answer is **Current** (Option 1).

### Final Answer:
**Current** is not a vector quantity.

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