Electric potential at a point distant \(0.5 \mathrm{~m}\) from a spherical conductor of radius \(0.2…
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
- \(+9 \mathrm{~V}\)
- \(-9 \mathrm{~V}\)
- \(+18 \mathrm{~V}\)
- \(-18 \mathrm{~V}\)
Solution
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, \(V=\frac{1}{4 \pi \varepsilon_0} \cdot \frac{q}{r}\)
\(=9 \times 10^9 \times \frac{10^{-9}}{0.5}=\frac{9}{0.5}=18 \mathrm{~V}\)
Asked in: AP EAMCET 2020 (21 Sep Shift 2)
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