u=u1+u2; u2=(1/(4*pi*e*e0))*(q2/l); u1= (1/(4*pi*e*e0))*(q1/r); q2= q1=4*10^-9; r=0,04; l=0,16; e=1; e0=8,85*10^-12
u=u1+u2; u2=(1/(4*pi*e*e0))*(q2/l); u1= (1/(4*pi*e*e0))*(q1/r); q2= q1=4*10^-9; r=0,04; l=0,16; e=1; e0=8,85*10^-12