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Solved: In the lab, you are trying to find the inductance
Chapter 30, Problem 63P(choose chapter or problem)
In the lab, you are trying to find the inductance and internal resistance of a solenoid. You place it in series with a battery of negligible internal resistance, a \(10.0-\Omega\) resistor, and a switch. You then put an oscilloscope across one of these circuit elements to measure the voltage across that circuit element as a function of time. You close the switch, and the oscilloscope shows voltage versus time as shown in Fig. P30.63.
(a) Across which circuit element (solenoid or resistor) is the oscilloscope connected? How do you know this?
(b) Why doesn’t the graph approach zero as \(t \rightarrow \infty\)?
(c) What is the emf of the battery?
(d) Find the maximum current in the circuit.
(e) What are the internal resistance and self-inductance of the solenoid?
Questions & Answers
QUESTION:
In the lab, you are trying to find the inductance and internal resistance of a solenoid. You place it in series with a battery of negligible internal resistance, a \(10.0-\Omega\) resistor, and a switch. You then put an oscilloscope across one of these circuit elements to measure the voltage across that circuit element as a function of time. You close the switch, and the oscilloscope shows voltage versus time as shown in Fig. P30.63.
(a) Across which circuit element (solenoid or resistor) is the oscilloscope connected? How do you know this?
(b) Why doesn’t the graph approach zero as \(t \rightarrow \infty\)?
(c) What is the emf of the battery?
(d) Find the maximum current in the circuit.
(e) What are the internal resistance and self-inductance of the solenoid?
ANSWER: