how to calculate time constant in rl circuit?
478511
The time required for the current flowing in the LR series circuit to reach its maximum steady state value is equivalent to about 5 time constants or 5τ. This time constant τ, is measured by τ = L/R, in seconds, where R is the value of the resistor in ohms and L is the value of the inductor in Henries.
589742
['If the number of seconds being subtracted is larger than the original seconds, you must borrow some seconds from the minutes: Subtract 1 from the original number of minutes. Increase the number of original seconds by 60.', 'Subtract the seconds.', 'Subtract the minutes.']
148651
R is a resistive component, L is Inductive and C is Capacitive. and in a C component, the phase angle between the current and voltage vectors is +90 deg i.e. the current vector leads the voltage vector by 90 deg.
1053802
['S(kVA) = √3 × I(A) × VL-L(V) / 1000.', 'So kilovolt-amps are equal to √3 times amps times volts divided by 1000.', 'kilovolt-amps = √3 × amps × volts / 1000.', 'kVA = √3 × A ⋅ V / 1000.', 'S = √3 × 12A × 190V / 1000 = 3.949kVA.']
610983
The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles per second.
711014
A capacitor is fully charged to 10 volts. Calculate the RC time constant, τ of the following RC discharging circuit when the switch is first closed. The time constant, τ is found using the formula T = R*C in seconds.
254108
['Identify all nodes.', 'Choose a reference node. Identify it with reference (ground) symbol. ... ', 'Assign voltage variables to the other nodes (these are node voltages.)', 'Write a KCL equation for each node (sum the currents leaving the node and set equal to zero). ... ', 'Solve the system of equations from step 4.']
115270
['Bazett formula: QTC = QT / √ RR.', 'Fridericia formula: QTC = QT / RR 1/3', 'Framingham formula: QTC = QT + 0.154 (1 – RR)', 'Hodges formula: QTC = QT + 1.75 (heart rate – 60)']
133024
You can use the equivalent formula d = rt which means distance equals rate times time. To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time. To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.
318082
To solve for time use the formula for time, t = d/s which means time equals distance divided by speed.
1170105
['RT = R1 + R2 + R3.', '2 + 2 + 3 = 7 Ohms.', 'R total is 7 Ohms.']
1360867
RL Circuit refers to a circuit having combination of resistance(s) and inductor(s). They are commonly used in chokes of luminescent tubes. In an A.C. circuit, inductors helps in reducing voltage, without the loss of energy.
685711
You need to know the overall potential difference across the resistor and the two resistor value which are in series. ... If the two resistor in series are r1 and r2 and potential difference across the two is V, then Vr1 = V * r1 / (r1+r2).
259970
['t = √(2y/g)', 't = √[2*(200 m)/(9.8 m/s2)]', 't = √(40.8 s2)', 't = 6.39 s.']
887463
['Step One: subtract the second hours, minutes, and seconds from the first separately.', 'Step Two: if the seconds are a negative number, then add 60 seconds and subtract 1 minute.']
1396600
Use these values in Ohm's Law. If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I.
656296
Calculate the time of one oscillation or the period (T) by dividing the total time by the number of oscillations you counted. Use your calculated (T) along with the exact length of the pendulum (L) in the above formula to find "g." This is your measured value for "g."