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Total electric flux leaving a charged conducting sphere from its diameter and surface charge density

The same question, asked 2 times: 2 May 2023 S1*, 19 Apr 2025 S2. Every wording below, oldest first.

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  1. Question 1

    2 May 2023 S1

    36
    A uniformly charged conducting sphere of diameter 14 cm has surface charge density of 40 μC m−240\,\mu\text{C m}^{-2}. The total electric flux leaving the surface of the sphere is nearly (Permittivity of free space =8.85×10−12= 8.85 \times 10^{-12} SI unit)

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  2. Question 2

    19 Apr 2025 S2

    19
    A uniformly charged conducting sphere of diameter 3.5 cm has a surface charge density of 20μCm−220\mu Cm^{- 2}. The total electric flux leaving the surface of the sphere is nearly [permittivity of free space, ε0=8.85×10−12SI\varepsilon_{0}= 8.85 \times10^{- 12}SI unit]

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