Consider a circuit consisting of a capacitor (20 ), resistor (100 ) and two identical diodes as shown in figure.

Question

Consider a circuit consisting of a capacitor (20 $μF$ ), resistor (100 $Ω$ ) and two identical diodes as shown in figure. The resistance of diode under forward biasing condition is 10 $Ω$ . The time constant of the circuit is $α \times 10^{- 3} s$ . The value of $α$ is ________. [2026]

Smart Achievers · Accepted Answer

(1)

$τ = R C$

$τ = (110) \times 20 \times 10^{- 6} \sec$

$τ = 2200 \times 10^{- 6} \sec$

$τ = 2.2 \times 10^{- 3} \sec$

Solution

Q.
Consider a circuit consisting of a capacitor (20 $μF$ ), resistor (100 $Ω$ ) and two identical diodes as shown in figure. The resistance of diode under forward biasing condition is 10 $Ω$ . The time constant of the circuit is $α \times 10^{- 3} s$ . The value of $α$ is ________. [2026]

1 2.2

2 2.0

3 2.1

4 2.4

Ans.
(1)

$τ = R C$

$τ = (110) \times 20 \times 10^{- 6} \sec$

$τ = 2200 \times 10^{- 6} \sec$

$τ = 2.2 \times 10^{- 3} \sec$

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