A charged spherical conductor of radius 0.1 m has a potential of 900 V at its surface. The charge on the conductor is:
Correct answer: C. 10⁻⁹ C
- A. 10⁻⁸ C
- B. 2 × 10⁻⁸ C
- C. 10⁻⁹ C
- D. 5 × 10⁻⁹ C
Explanation
Potential at the surface is V = kQ/R. Solving for Q, Q = VR/k = (900)(0.1)/(9 × 10⁹) = 10⁻⁹ C.
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