Question Details

An electron is moving with speed of 1 m/s at distance of 1 m from a large sheet of charge with density σ C/m² . Find maximum value of σ such that electron hit the sheet after 1 sec. (mass of electron 9 × 10^–31 kg, permittivity of free space ε₀ = 9 × 10^–12 C² /Nm²)

Options

A

4.05 × 10^–22 C/m²

B

8.10 × 10^–22 C/m²

C

4.05 × 10²⁴ C/m²

D

2.02 × 10^–20 C/m²

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