The three inductors in the circuit in (Figure 1) are connected across the terminals of a black box at t = 0. Take 1 (0) = 10 A and 12 (0) = -5 A. The resulting voltage for t> 0 is known to be %=1250e 25t V. Find i, (0). Express your answer to three significant figures and include the appropriate units.

The three inductors in the circuit in (Figure 1) are connected across the terminals of a black box at t = 0. Take 1 (0) = 10 A and 12 (0) = -5 A. The resulting voltage for t> 0 is known to be %=1250e 25t V. Find i, (0). Express your answer to three significant figures and include the appropriate units.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter21: Resistive-capacitive Series Circuits

Section: Chapter Questions

Problem 6RQ: A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating...

See similar textbooks

Similar questions

You are a journeyman electrician working in an industrial plant. Your task is to connect an inductor to a 480-V, 60-Hz line. To determine the proper conductor and fuse size for this installation, you need to know the amount of current the inductor will draw from the line. The nameplate on the inductor indicates that it has an inductance of 0.1 H. An ohmmeter reveals that it has a wire resistance of 10 . How much current should this inductor draw when connected to the line?
Incandescent lighting of 500 W is connected in parallel with an inductive load. A clamp-on ammeter reveals a total circuit current of 7 A. What is the inductance of the load connected in parallel with the incandescent lights? Assume a voltage of 120 V and a frequency of 60 Hz.
You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?
You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?
A 1-H inductor is connected in series with a 6-ohm resistor. If the connection is energized from a 9-V DC source, determine the current (in amperes) through the circuit for a long time. The initial current is 100 mA. Express your answers accurate to four decimal places. No need to put the units.
Here you see a circuit with a battery, fully uncharged capacitor, C and a bulb. What would happen to that electric bulb in the circuit when you switch on the circuit? Moreover, what would be the consequences if you switch off the circuit when capacitor is fully charged? Answer step by step .answer must be correct. Do all calculation follow image.
Consider the circuit shown in Figure Q1(d), calculate the equivalent inductance, Leq at terminal a-b. 15 μΗ 36 μΗ 10 μΗ 25 μΗ 40 μΗ Figure Q1(d)
Based on Figure Q1(a), identify the equivalent inductance seen at the terminal of a and b. [4 marks] 30mH 30mH 30mH 40mH 25mH
Givens are V1 = 950V, R1 = 44 ohms, R2 = 54 ohms, R3 = 81 ohms, L = 1 Henries. What is the current through the inductor at time t = 0.0074074 seconds?
1. A purely resistive circuit the current is leading by 90° with respect to voltage. 2. A purely inductive circuit the current is lag behind the voltage by 90°. 3. A purely capacitive circuit the current is lead by 90° with respect to the voltage. 4. A capacitor element stored magnetic energy. 5. An inductor element stored electrical energy. 6. Resistor elements consume power. 7. Angle between current and voltage is called power. 8. The power factor angle for a purely resistive is zero. 9. The power factor angle for a purely inductive load is -90°. 10. The power factor of a purely capacitive is leading.
Find the current through the inductor shown in Figure lb. (i/p is AC, consider results upto one decimal place). 1. 100 V 100 Hz 500 L=60H Figure lb