Capacitors C1(10 μ F ) and C2(20 μ F ) are connected in series across a 3 kV supply, as shown. What is the charge on the capacitor C1 ?

Question

Capacitors C1(10 μ F ) and C2(20 μ F ) are connected in series across a 3 kV supply, as shown. What is the charge on the capacitor C1 ? (A) 45000 μ C (B) 20000 μ C (C) 15000 μ C (D) 10000 μ C

Tardigrade Admin · Accepted Answer

(1/C)=(1/10)+(1/20)=(3/20) C=(20/3) μ F q=(20/3) . 3000 =20000 × 10-6 q=2 × 10-4 C

Q. Capacitors $C_{1} (10 μ F)$ and $C_{2} (20 μ F)$ are connected in series across a $3 kV$ supply, as shown. What is the charge on the capacitor $C_{1}$ ?

$45000 μ C$

$20000 μ C$

$15000 μ C$

$10000 μ C$

$\frac{1}{C} = \frac{1}{10} + \frac{1}{20} = \frac{3}{20}$
$C = \frac{20}{3} μ F$
$q = \frac{20}{3} .3000$
$= 20000 \times 1 0^{- 6}$
$q = 2 \times 1 0^{- 4} C$

Q. Capacitors C1​(10μF) and C2​(20μF) are connected in series across a 3kV supply, as shown. What is the charge on the capacitor C1​ ?

45000μC

20000μC

15000μC

10000μC