A small sphere with a mass of 1.70 g is swung connected by a thread between two parallel vertical plates with a distance of 5.00 cm. (Figure 1) There are uniformly distributed + σ and −σ surface charge densities in the cavity and on the plates. Load sphere q = 9.10 × 10−6 C Whatever value takes the potential difference between the plates, the yarn makes an angle of 30.0∘ with the vertical.?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.