Question

Figure shows the variation of electric field intensity with distance x. What is the potential difference between the points at x = 2m and x = 6m from 0?

• A. 30 V
• B. 60 V
• C. 40 V
• D. 80 V

Answer 1

Answer: (A)

30 V

Answer 2

Area inside the E – x graph gives the value of potential difference between points.

\ Area = (10 × 2 + $\frac { 1 } { 2 }$ × 2 × 10) = 30 V