MCQ
The variation of potential with distance $x$ from a fixed point is as shown in figure. The electric field at $x =13\,m$ is......$volt/meter$
- A$7.5$
- B$-7.5$
- ✓$5$
- D$-5$
✓
Answer
Correct option: C.
$5$
c
$E = - \frac{{dV}}{{dx}} = \frac{{20}}{4} = 5\,volt/meter$
$E = - \frac{{dV}}{{dx}} = \frac{{20}}{4} = 5\,volt/meter$
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