Assume that an electric field

Question:

Assume that an electric field $\overrightarrow{\mathrm{E}}=30 \mathrm{x}^{2} \hat{\mathrm{i}}$ exists in space. Then the potential difference $\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{O}}$, where $\mathrm{V}_{\mathrm{O}}$ is the potential at the origin and $\mathrm{V}_{\mathrm{A}}$ the potential at $\mathrm{x}=2 \mathrm{~m}$ is :-

  1. $-80 \mathrm{~J}$

  2. $80 \mathrm{~J}$

  3. 120 J

  4. - 120 J


Correct Option: 1

Solution:

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