Precalculus Enhanced with Graphing Utilities (7th Edition)

7th Edition

ISBN: 9780134119281

Author: Michael Sullivan, Michael Sullivan III

Publisher: PEARSON

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Textbook Question

Chapter 5.3, Problem 119AE

119. Current in an RL Circuit The equation governing the amount of current I (in amperes) after time t (in seconds) in a single RL circuit consisting of a resistance R (in ohms), an inductance L (in henrys), and an electromotive force E (in voles) is

$I = \frac{E}{R} [1 - e^{- (R / L) t}]$

Chapter 5.3, Problem 119AE, 119. Current in an RL Circuit The equation governing the amount of current I (in amperes) after time

(a) If $E = 120$ volts, $R = 10$ ohms, and $L = 5$ henrys, how much current I₁ is flowing after 0.3 second? After 0.5 second? After 1 second?

(b) What is the maximum current?

(d) If $E = 120$ volts, $R = 5$ ohms, and $L = 10$ henrys, how much current I₂ is flowing after 0.3 second? After 0.5 second? After 1 second?

(e) What is the maximum current?

(f) Graph the function $I = I_{2} (t)$ on the same coordinate axes as $I_{1} (t)$ .

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Chapter 5.3, Problem 118AE

Chapter 5.3, Problem 120AE

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Chapter 5 Solutions

Precalculus Enhanced with Graphing Utilities (7th Edition)

Ch. 5.1 - Find f( 3 ) if f( x )=4 x 2 +5x . (pp. 60-62)Ch. 5.1 - Find f(3x) if f(x)=42 x 2 . (pp. 60-62)Ch. 5.1 - Find the domain of the function f(x)= x 2 1 x 2 25...Ch. 5.1 - Given two functions f and g , the _____, denoted...Ch. 5.1 - True or False If f(x)= x 2 and g(x)= x+9 , then...Ch. 5.1 - If f(x)= x+2 and g(x)= 3 x , which of the...Ch. 5.1 - If H=fg and H(x)= 254 x 2 , which of the following...Ch. 5.1 - True or False The domain of the composite function...Ch. 5.1 - In Problems 9 and 10, evaluate each expression...Ch. 5.1 - In Problems 9 and 10, evaluate each expression...

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Solution Summary: The author calculates how much current I 1 is flowing after 0.3 second, 7.5855, and 10.3760, respectively, when time approaches infinity.

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