Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

3. Electricity and Magnetism 87

connected and the same voltage is applied

between the clamps 3 and 4.

3.35. Determine the current through the

battery in the circuit shown in Fig. 93

Cf

R 2 2

Fig. 93

(1) immediately after the key K is closed and

(2) in a long time interval, assuming that

the parameters of the circuit are known.

3.36. The key K (Fig. 94) is connected in

turn to each of the contacts over short iden-

(^81) Rf
T- f
oz
C
(^82) ,
Fig. 94
tical time intervals so that the change in
the charge on the capacitor over each con-
nection is small.
What will be the final charge qt on the
capacitor?