The discharging time constant of a circuit consisting of a capacitor is the time taken for the charge in the capacitor to become __________ % of the initial charge.(a) 33(b) 63(c) 37(d) 36I got this question in class test.The above asked question is from Growth and Decay in portion Capacitance and Capacitors of Basic Electrical Engineering

The discharging time constant of a circuit consisting of a capacitor i

1.	The discharging time constant of a circuit consisting of a capacitor is the time taken for the charge in the capacitor to become __________ % of the initial charge.(a) 33(b) 63(c) 37(d) 36I got this question in class test.The above asked question is from Growth and Decay in portion Capacitance and Capacitors of Basic Electrical Engineering
Answer» The correct option is (C) 37 To explain: We know that: Q=Q0(1-e^-t/RC). When RC=t, we have: Q=Q0(1-e^-1) = 0.37*Q0. Hence the TIME CONSTANT is the time taken for the charge in a capacitive circuit to BECOME 0.37 times its initial charge.

Discussion

No Comment Found

Related InterviewSolutions

If a large amount of voltage is applied to a capacitor, what is the current that flows through it?(a) Displacement current(b) Conduction current(c) Both conduction and displacement current(d) Neither conduction nor displacement currentThe question was posed to me by my college professor while I was bunking the class.This key question is from Leakage and Conduction Currents in Capacitors topic in section Capacitance and Capacitors of Basic Electrical Engineering
A capacitor using chemical reactions to store charge is _______(a) Paper capacitor(b) Ceramic capacitor(c) Polyester capacitor(d) Electrolyte capacitorI have been asked this question in a national level competition.The doubt is from Types of Capacitor and Capacitance topic in portion Capacitance and Capacitors of Basic Electrical Engineering
When the potential gradient increases, what happens to the force between the plates?(a) Increases(b) Decreases(c) Remains the same(d) becomes zeroThis question was posed to me during an interview.The query is from Force of Attraction Between Oppositely Charged Plates topic in section Capacitance and Capacitors of Basic Electrical Engineering
Calculate the energy in the 2F capacitor.(a) 8.6kJ(b) 64kJ(c) 64J(d) 6.4kJThe question was asked at a job interview.Query is from Energy Stored in a Charged Capacitor topic in chapter Capacitance and Capacitors of Basic Electrical Engineering
What is the voltage in the resistor as soon as the switch is closed at t=0.(a) 0V(b) Infinity(c) 220V(d) Insufficient information providedI got this question by my school principal while I was bunking the class.My question is taken from Transients in CR Networks topic in portion Capacitance and Capacitors of Basic Electrical Engineering
The flow of electrons which does not pass through the battery is known as ________(a) Displacement current(b) Leakage current(c) Either displacement or leakage current(d) Neither displacement nor leakage currentThe question was asked by my school principal while I was bunking the class.Origin of the question is Leakage and Conduction Currents in Capacitors in chapter Capacitance and Capacitors of Basic Electrical Engineering
The thickness of a material having dielectric strength 10MV/m is 5m, calculate the potential difference.(a) 2MV(b) 10MV(c) 50MV(d) 100MVThe question was posed to me in final exam.This question is from Dielectric Strength topic in division Capacitance and Capacitors of Basic Electrical Engineering
What is the value of current in a discharging capacitive circuit if the initial current is 2A at time t=RC.(a) 0.74A(b) 1.26A(c) 3.67A(d) 2.89AThis question was posed to me in semester exam.The origin of the question is Growth and Decay topic in portion Capacitance and Capacitors of Basic Electrical Engineering
A CR network is one which consists of _________(a) A capacitor and resistor connected in parallel(b) A capacitor and resistor connected in series(c) A network consisting of a capacitor only(d) A network consisting of a resistor onlyI had been asked this question by my school teacher while I was bunking the class.Question is taken from Transients in CR Networks in section Capacitance and Capacitors of Basic Electrical Engineering
What is the value of current in a charging capacitive circuit if the initial current is 2A at time t=RC.(a) 0.74A(b) 1.26A(c) 3.67A(d) 2.89AI got this question in an interview for internship.This is a very interesting question from Growth and Decay topic in division Capacitance and Capacitors of Basic Electrical Engineering

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment