Question

The variation of potential with distance R from a fixed point is shown in figure. The electric field at R = 5 m is–

• A. 2.5 V m^–1
• B. – 2.5 V m^–1
• C. (2/5) V m^–1
• D. – (2/5) V m^–1

Answer 1

Answer: (A)

2.5 V m^–1

Answer 2

At r = 5 m E = –= –$\left( \frac { - 5 } { 2 } \right)$= 2.5