Initially, the switch is in position 1 for a long time. At `t = 0`, the switch is Obtain expressions for `V_C` and `V_R` for `tgt0`

Answer

A, B

Explanation

`q_i=CV_i=100muC, q_f=CV_f=-50muC`
Therefore, charge will vary from `100muC` to `-50muC` exponentially.
`:.q=-50+150e^(-t//tau_C),` Here `q` is in `muC`
`tau_C=CR=(10^-6)(5xx10^3)=5xx10^-3`
`:.q=-50+150e^(-t//tau_C)V`
or `V_C=50(3e^(-200t)-1)`
`i=-(dq)/(dt)=(150xx10^-6)/(5xx10^-3)e^(-200t)=30xx10^-3e^(-200t)`
`V_R=iR=150e^(-200t)`