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Figure below shows a small sphere with mass 1.50 g hangs by a thread between two very large parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities +σ and −σ. The charge on the sphere is q = 8.90×10−6 C. If the thread to remain at an angle of 30.0∘ with the vertical, calculate: (a) the potential difference between the plates. [8] (b) the uniform surface charge density. [2]

Figure below shows a small sphere with mass 1.50 g hangs by a thread between two very large parallel vertical plates 5.00 cm apart. The plates are insulating and have uniform surface charge densities +σ and −σ. The charge on the sphere is q = 8.90×10−6 C. If the thread to remain at an angle of 30.0∘ with the vertical, calculate: (a) the potential difference between the plates. [8] (b) the uniform surface charge density. [2]

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Figure below shows a small sphere with mass 1.50 g hangs by a thread between two very large parallel vertical plates 5.00 c m apart. The plates are insulating and have uniform surface charge densities + σ and − σ . The charge on the sphere is q = 8.90 × 10 − 6 C . If the thread to remain at an angle of 30.0 ∘ with the vertical, calculate: (a) the potential difference between the plates. [8] (b) the uniform surface charge density. [2]

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