An RC circuit consists of a resistor with resistance of R=100 kΩ , a battery with emf of 100 V , and two capacitors with capacitances of C1=20μF and C2=60μF. Initially the capacitors are uncharged, and then the switch is closed at t=0.

a. How much charge will be stored in eah capacitor after a long time has elapsed?
b. What will the total charge on both capacitors two time constants after the switch is closed?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc