4. The graph shows the current through the ideal inductor as a function of time after the switch is thrown to (a). Determine the time constant of the circuit. Comment: the b way to do this is to note that when t = T₁, the current is l Io (1e-¹) = 0.63 1. a. b. The inductance is 1.2 H. What is the resistance r? Current (mA) 2 1.5 0.5 2 4 6 8 10 12 time (ms) C. What is the EMF E? Hint: use the fact that the inductor will act like a wire at very long times. 14 LE d. What is the voltage across the inductor at t = 6 ms? Hint: use the results from (b) and (c) and the loop rule.
4. The graph shows the current through the ideal inductor as a function of time after the switch is thrown to (a). Determine the time constant of the circuit. Comment: the b way to do this is to note that when t = T₁, the current is l Io (1e-¹) = 0.63 1. a. b. The inductance is 1.2 H. What is the resistance r? Current (mA) 2 1.5 0.5 2 4 6 8 10 12 time (ms) C. What is the EMF E? Hint: use the fact that the inductor will act like a wire at very long times. 14 LE d. What is the voltage across the inductor at t = 6 ms? Hint: use the results from (b) and (c) and the loop rule.
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Transcribed Image Text:4. The graph shows the current through the ideal inductor as a function of time after the switch is thrown to (a).
Determine the time constant of the circuit. Comment: the
way to do this is to note that when t = T₁, the current is 1
Io (1e-¹) = 0.63 1.
a.
b. The inductance is 1.2 H. What is the resistance r?
Current (mA)
2
1.5
1
0.5
2
4
8 10 12 14
6
time (ms)
c. What is the EMF E? Hint: use the fact that the inductor will act like a wire at very long times.
d. What is the voltage across the inductor at t = 6 ms? Hint: use the results from (b) and (c) and the loop rule.
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