Solutions (^269)
It can easily be verified that
Consequently,
NN 3
Ar 4 Ar1 =40 W.
3.35. At the first moment after the connection of
the key K, the capacitors are not charged, and
r
Fig. 218
hence the voltage between points A and B is zero
(see Fig. 93). The current in the circuit at this
instant can be determined from the condition
r

••-•-•••••.

Ri

Under steady-state conditions, the current be-

tween points A and B will pass through the re-

sistors R 1 and R. Therefore, the current passing

through these conductors after a long time is

V
12— R 1 -}-R 3 •

3.36. Let us consider the steady-state conditions

when the voltage across the capacitor practically

does not change and is equal on the average to U.