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6-5) Consider an LR circuit with a battery, ɛs. The circuit has been running for a very long time. The battery is removed at t= 0 and the rest of the circuit immediately reconnected. Five milliseconds later, the current is measured to be 0.2 A. If R = 15 Ohms and the emf of the battery in 12 V, A) What is the inductance, L? B) What is the time constant, t? C) How long after the switch is thrown will the voltage across the resistor be 4V?

6-5) Consider an LR circuit with a battery, ɛs. The circuit has been running for a very long time. The battery is removed at t= 0 and the rest of the circuit immediately reconnected. Five milliseconds later, the current is measured to be 0.2 A. If R = 15 Ohms and the emf of the battery in 12 V, A) What is the inductance, L? B) What is the time constant, t? C) How long after the switch is thrown will the voltage across the resistor be 4V?

University Physics Volume 2
University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter14: Inductance
Section: Chapter Questions
Problem 52P: In Figure 14.12, =12V , L = 20 mH, and R=5.0. Determine (a) the time constant of the circuit, (b)...
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6-5) Consider an LR circuit with a battery, Es. The circuit has been running for a very long time. The battery is removed at t = 0 and the rest of the circuit immediately reconnected. Five milliseconds later, the current is measured to be 0.2 A. If R = 15 Ohms and the emf of the battery in 12 V, A) What is the inductance, L? B) What is the time constant, ti? C) How long after the switch is thrown will the voltage across the resistor be 4V?
Transcribed Image Text:6-5) Consider an LR circuit with a battery, Es. The circuit has been running for a very long time. The battery is removed at t = 0 and the rest of the circuit immediately reconnected. Five milliseconds later, the current is measured to be 0.2 A. If R = 15 Ohms and the emf of the battery in 12 V, A) What is the inductance, L? B) What is the time constant, ti? C) How long after the switch is thrown will the voltage across the resistor be 4V?
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