Two identical capacitors each of capacitance C are charged to the same potential V and are connected in two circuits (i) and (ii) at t = 0 as shown. The charged on the capacitor at t = CR are

Question

Two identical capacitors each of capacitance C are charged to the same potential V and are connected in two circuits (i) and (ii) at t = 0 as shown. The charged on the capacitor at t = CR are (A)  (CV/e) , (CV/e)  (B)  CV , CV  (C)  (VC/e), VC  (D)  VC , (VC/e)

Tardigrade Admin · Accepted Answer

In Fig. (i) the p-n junction diode is forward biased and represents a very low resistance, the capacitor, therefore discharges itself through resistor R according to relation. q =q0 e-t / C R and q0 =C V at t=C R ∴ q =q0 e-1=(C V/e) In Fig. (ii), the p-n junction diode is reverse biased, the capacitor, therefore holds the charge intact. ∴ q=q0=C V

Q. Two identical capacitors each of capacitance $C$ are charged to the same potential $V$ and are connected in two circuits (i) and (ii) at $t = 0$ as shown. The charged on the capacitor at $t = CR$ are

$\frac{C V}{e}$ , $\frac{C V}{e}$

$C V$ , $C V$

$\frac{V C}{e}, V C$

$V C$ , $\frac{V C}{e}$

Q. Two identical capacitors each of capacitance C are charged to the same potential V and are connected in two circuits (i) and (ii) at t=0 as shown. The charged on the capacitor at t=CR are

eCV​ , eCV​

CV , CV

eVC​,VC

VC , eVC​

Q. Two identical capacitors each of capacitance $C$ are charged to the same potential $V$ and are connected in two circuits (i) and (ii) at $t = 0$ as shown. The charged on the capacitor at $t = CR$ are

$\frac{C V}{e}$ , $\frac{C V}{e}$

$C V$ , $C V$

$\frac{V C}{e}, V C$

$V C$ , $\frac{V C}{e}$