The electric potential $V$ is given as a function of distance $x$ (metre) by $V=(5x^2-10x-9)$ volts. The value of electric field at $x=1$ m is:
- A20 V/m
- B6 V/m
- C11 V/m
- Dzero
✓ Correct answer: D
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Question ID #437107 · NewNcert