Suppose the RC time constant for the combination in Figure 19.37A is 2.4 ms. A second ca...

Suppose the RC time constant for the combination in Figure 19.37A is 2.4 ms. A second capacitor is then placed in parallel with the original capacitor as in Figure 19.37B. If these capacitors are identical, what is the new value of the time constant

(a) 2.4 ms

(b) 4.8 ms

(c) 1.2 ms

(reference figure 19.37)