fatt52

Verified answer

Φ=2 B   r=0.02 м   q=?
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φ=φ1+φ2+φ3+φ4
φ1=φ4=k*q/(1.5*r)
φ2=φ3=k*q/(0.5*r)
φ=2*k*q/(3*r)+2*k*q/r+2*k*q/r+2*k*q/(3*r)=16*k*q/3
q=3*r*φ/(16*k)=3*0.02*2/(16*9*10^9)≈8.33*10^-13 Кл
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