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2. Electric potential and capacitance — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
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
$E =  - \frac{{dV}}{{dx}} = \frac{{20}}{4} = 5\,volt/meter$

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