Consider an RL circuit consisting of an inductor with an inductance of L henry(H)and a resistor with a resistance of Rohms () driven by a voltage of E(t) volts (V). Given the voltage drop across the resistor is ER RI, and across the inductor is E₁ = L(dI / dt), Kirchhoff's Law gives I(t) Now suppose an RL circuit with a 3 resistor and a 0.03H inductor is driven by a constant voltage of 90V. If the initial resistor current is I(0) = 0A, find the current I and the voltages across the inductor EL and the resistorER in terms of time t. = ER(t) EL(t) = = = dI L + RI = E(t) dt A V V

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Consider an RL circuit consisting of an inductor with an inductance of L henry(H)and a
resistor with a resistance of R ohms (2) driven by a voltage of E(t) volts (V). Given
the voltage drop across the resistor is ER = RI, and across the inductor is
EL = L(dI / dt), Kirchhoff's Law gives
Now suppose an RL circuit with a 3 resistor and a 0.03H inductor is driven by a
constant voltage of 90V. If the initial resistor current is I(0) = 0A, find the current I
and the voltages across the inductor EL and the resistorER in terms of time t.
I(t)
=
ER(t)
=
dI
L- + RI = E(t)
dt
EL(t) =
=
A
V
V
Transcribed Image Text:Consider an RL circuit consisting of an inductor with an inductance of L henry(H)and a resistor with a resistance of R ohms (2) driven by a voltage of E(t) volts (V). Given the voltage drop across the resistor is ER = RI, and across the inductor is EL = L(dI / dt), Kirchhoff's Law gives Now suppose an RL circuit with a 3 resistor and a 0.03H inductor is driven by a constant voltage of 90V. If the initial resistor current is I(0) = 0A, find the current I and the voltages across the inductor EL and the resistorER in terms of time t. I(t) = ER(t) = dI L- + RI = E(t) dt EL(t) = = A V V
Expert Solution
Step 1: Introduction of the given problem

L fraction numerator d I over denominator d t end fraction plus R I equals E open parentheses t close parentheses
I open parentheses 0 close parentheses equals 0
R equals 3 space capital omega
L equals 0.03 H
E open parentheses t close parentheses equals 90

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