Question

Graphical variation of electric field due to a uniformly charged insulating solid sphere of radius R, with distance r from the centre O is represented by

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

Step 1: Analyze the electric field inside and outside the sphere.
- Inside the sphere \((r < R)\): Electric field increases linearly with r due to the uniformly distributed charge.
- Outside the sphere \((r ≥ R)\): Electric field decreases as \(\frac{1}{ r^2}\) , behaving like a point charge at the center. 

Step 2: Draw the graph.
- Combine the two observations to get the correct graph for the electric field variation. 

Final Answer: The correct graph is represented by option (4).