- Ta có: + $C_1 // C_1 \Rightarrow C_{11}=C_1+C_1=2C_1$ $(F)$
+ $C_{11}ntC_2\Rightarrow C_{112}=\frac{C_{11}C_2}{C_{11}+C_2}=\frac{2C_12C_1}{2C_1+2C_1}=C_1$ $(F)$
+ $C_{112}//C_1\Rightarrow C_{1121}=C_{112}+C_1=C_1+C_1=2C_1$ $(F)$
+ $C_{1121}nt C_2 \Rightarrow C_{AB}=\frac{C_{1121}C_2}{C_{1121}+C_2}=C_1$ $(F)$
- Lại có:
+ $Q_{AB}=C_{AB}.U=16C_1$ $(C)$
$\Rightarrow Q_{1121}=Q_{AB}=16C_1$ $(C)$
+ $U_1 = U_{1121}=\frac{Q_{1121}}{C_{1121}}=\frac{16C_1}{2C_1}=8$ $(V)$