v(0)=0 Volts
v(t)=10 Volts
R1=20 Ohm
R2=30 Ohm
C=.1 Farad
v ( t ) = R 1 ( i 1 + i 2 ) + 1 C ∫ i d t {\displaystyle v(t)=R1(i1+i2)+{\dfrac {1}{C}}\int {idt}}