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t = L/R

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Q: What is the time constant of a 20 mH inductor in series with a 230 W resistor?
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What is the time constant of a 2 mH inductor and a 200 ohm resistor connected in series?

The time constant for an RL-circuit is equal to L/R. In this case, (0.002 H)/(200 ohm).


What is the time constant of a 20mH inductor in series with a 230 ohm resistor?

Simple...(20*10-3)/230=869 microseconds


What is the time constant of a 50mH inductor in series with a 200 ohm resistor?

You need to convert the inductance value to henry. Then, simply divide the inductance by the resistance.


How do you calculate the time constant in a series resistor?

A resistor by itself has no time constant. For a circuit to have a time constant it must contain either capacitors or inductors.


What is one time constant of a 4.7 μF capacitor in series with a 22 kΩ resistor?

The time constant of a 4.7 µF capacitor in series with a 22 KΩ resistor is about 103 ms.


What is the time constant of a 0.001 microfarad capacitor and a 15000 ohm resistor connected in series in a dc circuit?

The same as the time constant of a 2.7 microfarad capacitor and a 33 ohm resistor connected in series.


Formulas for Time constant for inductor in series with a resister?

I=v/r(1-E [negitive exponintial -RT/L])


How do you change time constant of capacitor?

In theory ... on paper where you have ideal components ... a capacitor all by itself doesn't have a time constant. It charges instantly. It only charges exponentially according to a time constant when it's in series with a resistor, and the time constant is (RC). Keeping the same capacitor, you change the time constant by changing the value of the resistor.


A 3 V battery is connected in series with a resistor and an inductor The series circuit has a time constant of 532ms and the maximum current is 262 mA What is the value of the inductance?

The final current is E/R = 0.262 = 3/R.R = 3/0.262 ( = 11.45 ohms ).The time constant is RL = 0.532.L = 0.532 / R = (0.532) / (3/0.262) = (0.532) (0.262) / 3= 46.46 millihenrys (rounded)


What is the time constant of a .05 microfarad capacitor and a 200 kilo ohm resistor connected in series?

The time constant of a 0.05 microfarad capacitor and a 200 K ohm resistor in series is simply their product, 0.05 times 200,000, or 10,000 microseconds, or 10 milliseconds. (Farads times ohms = seconds)


What is the act of recovering energy from Capacitor?

A: It is called discharging a capacitor. The charge will follow the rules of a time constant set up by the series resistor and the capacitor. 1 time constant 63% of the charge will be reached and continue at that rate.


How long does it take for a battery to charge a capacitor?

Usually a tiny fraction of a second. Actually it will depend on the characteristics of the the capacitor, and of the remaining circuit (mainly, any resistor in series). The "time constant" of a capacitor with a resistor in series to charge from 0 to a fraction of (1 - 1/e), about 68%, of its final value. This time is the product of the resistance and the capacitance. After about 5 time constant, you can consider the capacitor completely loaded for all practical purposes - i.e., it will be at the same voltage as the battery.