Question

5. Referring to the instantaneous circuit in Figure Q5, DCSUPPLY + PS1 S R R1 C C1 Figure Q5 a) what is the time constant ($\tau$) of the circuit if the value of resistance and capacitance is set to 8 k$\Omega$ and 0.1 $\mu$F? (2 marks) b) calculate the value of current and voltage drop across the resistor and capacitor at the instant of 25 miliseconds connected to supply voltage of 200 V. (6 marks) c) calculate the time taken for the circuit to reach the voltage drop across capacitor of 80 V. (4 marks) d) Discuss the changes on the value of current and voltage drop across resistor and capacitor if the value of resistor is changed to 4 k$\Omega$. (4 marks) 6. For a given RC circuit connected to 50V supply, it takes 5 $\mu$s for a capacitor to charge to half the battery voltage, through a 10 k$\Omega$ resistor, what is the capacitance C? If the capacitance is doubled, describe the changes on the time constant of the circuit. (4 marks)

          5. Referring to the instantaneous circuit in Figure Q5,
DCSUPPLY
+ PS1 S R R1 C C1
Figure Q5
a) what is the time constant ($\tau$) of the circuit if the value of resistance and
capacitance is set to 8 k$\Omega$ and 0.1 $\mu$F?
(2 marks)
b) calculate the value of current and voltage drop across the resistor and capacitor
at the instant of 25 miliseconds connected to supply voltage of 200 V.
(6 marks)
c) calculate the time taken for the circuit to reach the voltage drop across capacitor
of 80 V.
(4 marks)
d) Discuss the changes on the value of current and voltage drop across resistor and
capacitor if the value of resistor is changed to 4 k$\Omega$.
(4 marks)
6. For a given RC circuit connected to 50V supply, it takes 5 $\mu$s for a capacitor to charge
to half the battery voltage, through a 10 k$\Omega$ resistor, what is the capacitance C?
If the capacitance is doubled, describe the changes on the time constant of the circuit.
(4 marks)

5. Referring to the instantaneous circuit in Figure Q5,
DCSUPPLY
+ PS1 S R R1 C C1
Figure Q5
a) what is the time constant (τ) of the circuit if the value of resistance and
capacitance is set to 8 kΩ and 0.1 μF?
(2 marks)
b) calculate the value of current and voltage drop across the resistor and capacitor
at the instant of 25 miliseconds connected to supply voltage of 200 V.
(6 marks)
c) calculate the time taken for the circuit to reach the voltage drop across capacitor
of 80 V.
(4 marks)
d) Discuss the changes on the value of current and voltage drop across resistor and
capacitor if the value of resistor is changed to 4 kΩ.
(4 marks)
6. For a given RC circuit connected to 50V supply, it takes 5 μs for a capacitor to charge
to half the battery voltage, through a 10 kΩ resistor, what is the capacitance C?
If the capacitance is doubled, describe the changes on the time constant of the circuit.
(4 marks)

Added by Carlos P.

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