Some lamps are made to turn on or off when the perspective base is touched. These use a on...

Some lamps are made to turn on or off when the perspective base is touched. These use a one-terminal variation of the capacitive switch circuit discussed in the Practical Perspective. Figure. shows a circuit model of such a lamp. Calculate the change in the voltage v(t) when a person touches the lamp. Assume all capacitors are initially discharged.