Question

Sketch an electric field pattern for an isolated negative charge

Answer 1

To sketch the electric field pattern for an isolated negative charge, follow these guidelines:

1. **Basic Concept**: A negative charge creates an electric field that points toward the charge. This is because electric field lines indicate the direction a positive test charge would move.

2. **Sketching the Charge**: Start by representing the negative charge with a small circle or dot, and label it with a “-” to indicate that it is negative.

3. **Drawing Electric Field Lines**:
- Draw lines radiating inward toward the negative charge from various directions. These lines represent the direction of the electric field.
- The density of the lines indicates the strength of the electric field; closer together means a stronger field.
- Make sure that the lines have arrows pointing towards the charge.

4. **Number of Lines**: Typically, for illustrative purposes, you might draw several lines (e.g., 8-12) around the charge at equal angles to give a symmetrical appearance.

5. **Boundary Conditions**: Electric field lines should not intersect. They should smoothly curve and always start from positive charges (if any are present in a different context) or extend infinitely if there are no other charges nearby.

6. **Directionality**: Ensure that the arrows on the lines clearly show they are pointing toward the negative charge.

By following these points, you can create a clear two-dimensional representation of the electric field pattern around an isolated negative charge. This representation helps illustrate how the electric field behaves in relation to a negative charge.