Electric Potential & Equipotentials
Following figure indicates the electric potential V as a function through 4 regions on x-axis. Which of the following is correct for the electric field E in these regions?

Show answer and solution
Answer: (c)
- : magnitude of equals the slope of the – graph.
- Regions 1 (AB) and 3 (CD) are flat: .
- Region 4 (DE) is much steeper than region 2 (BC), so .
- So the answer is (c) and .