r = 10 см = 0,1м
φ = 300В
q/S - ?
φ = kq/r, S = 4пr^2, q = φr/k, q/S = φ/(4пrk)
q/S = 300 / (4*3.14*0.1*9*10^9) = 26.5*10^-9 Кл/м^2 = 26.5 нКл/м^2
r = 10 см = 0,1м
φ = 300В
q/S - ?
φ = kq/r, S = 4пr^2, q = φr/k, q/S = φ/(4пrk)
q/S = 300 / (4*3.14*0.1*9*10^9) = 26.5*10^-9 Кл/м^2 = 26.5 нКл/м^2