AP EAMCET · PHYSICS · Electrostatics
Electric potential at a point distant \(0.5 \mathrm{~m}\) from a spherical conductor of radius \(0.2 \mathrm{~m}\) charged to \(+1 \mathrm{nC}\) is
- A \(+9 \mathrm{~V}\)
- B \(-9 \mathrm{~V}\)
- C \(+18 \mathrm{~V}\)
- D \(-18 \mathrm{~V}\)
Answer & Solution
Correct Answer
(C) \(+18 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Charge on spherical conductor, \(q=+\ln C\) \(=10^{-9} \mathrm{C}\) Radius, \(R=0.2 \mathrm{~m}\) Distance of point from spherical conductor, \(r=0.5 \mathrm{~m}\) \(\therefore\) Electric potential, \(V=\frac{1}{4 \pi \varepsilon_0} \cdot \frac{q}{r}\)…
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