4. A DC voltage of 80 volts is applied to a circuit containing a resistance of 80 ohms in series with an inductance of 20 Henries. Calculate the growth of current at the instant completing circuit. a. 4 Amp/sec b. 1/2 Amp/sec c. 2 Amp/sec d. 4 Amp/sec 5. A coil having L = 150 H, R = 200 ohms is connected in series with 100 ohms resistor. A 240-V de source is connected to the circuit at t = 0. What is the voltage across the coil at t=0.5 sec.
4. A DC voltage of 80 volts is applied to a circuit containing a resistance of 80 ohms in series with an inductance of 20 Henries. Calculate the growth of current at the instant completing circuit. a. 4 Amp/sec b. 1/2 Amp/sec c. 2 Amp/sec d. 4 Amp/sec 5. A coil having L = 150 H, R = 200 ohms is connected in series with 100 ohms resistor. A 240-V de source is connected to the circuit at t = 0. What is the voltage across the coil at t=0.5 sec.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Transcribed Image Text:4. A DC voltage of 80 volts is applied to a circuit containing
a resistance of 80 ohms in series with an inductance of 20
Henries. Calculate the growth of current at the instant
completing circuit.
a. 4 Amp/sec
b. 1/2 Amp/sec
c. 2 Amp/sec
d. 4 Amp/sec
5. A coil having L = 150 H, R = 200 ohms is connected in
series with 100 ohms resistor. A 240-V de source is
connected to the circuit at t = 0. What is the voltage
across the coil at t=0.5 sec.
Transcribed Image Text:a. 185.9 V
b. 88.2 v
c. 189.4 v
d. 120 v
6. A constant voltage is applied to R-L circuit at t=0. The
voltage across the inductance is 20 V at t=3.46 ms and 5 V
at 25 ms. If the inductance is 2 H, what is the value of R?
a. 178.20
b. 127.82
c. 182.72
d. 128.72
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