Question

The variation of electric field intensity E versus distance x is shown in the figure. The potential difference between the point x = 0 to x = 3 m is

• A. 20 V
• B. 30V
• C. 10V
• D. 5V

Answer 1

The correct option is C 10V

Area under $E\times x$ graph gives potential difference

Area when$x=0=0V$

Area when $x=3=(\frac{1}{2}\times 2\times 10)=10V$

So, potential difference $=10V-0V=10V$