AP EAMCET · PHYSICS · Electrostatics
A uniformly charged conducting sphere of \(2.4 \mathrm{~m}\) diameter has a surface charge density of \(80.0 \mu \mathrm{C} \mathrm{m}^{-2}\). The charge on the sphere is nearly
- A \(2.5 \times 10^{-3} \mathrm{C}\)
- B \(1.45 \times 10^{-3} \mathrm{C}\)
- C \(6.5 \times 10^{-3} \mathrm{C}\)
- D \(0.15 \times 10^{-3} \mathrm{C}\)
Answer & Solution
Correct Answer
(B) \(1.45 \times 10^{-3} \mathrm{C}\)
Step-by-step Solution
Detailed explanation
Diameter of sphere \(\mathrm{d}=2.4 \mathrm{~m}\) Radius, \(\mathrm{r}=\frac{\mathrm{d}}{2}=1.2 \mathrm{~m}\) Surface charge density, \(\sigma=80 \times 10^{-6} \mathrm{C} \mathrm{m}^{-2}\) Charge on the sphere, \(\mathrm{Q}=\sigma \mathrm{A}\)…
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