The circuit of Exercise 13.20 is modified by changing R to 10 kΩ. What value should be chosen for C so that the time taken for the capacitor to charge to 2.5 V is unchanged. Repeat Computer Simulation...

The circuit of Exercise 13.20 is modified by changing R to 10 kΩ. What value should be chosen for C so that the time taken for the capacitor to charge to 2.5 V is unchanged.

Repeat Computer Simulation Exercise 13.1 with V = 5 V, R = 100 kΩ and C = 1 μF. Plot the voltage across the capacitor as a function of time and hence estimate the time taken for the capacitor voltage to reach 2.5 V.

Explain what is meant by a dielectric.