4. A series RL circuit has an EMF of 50V, a resistance of 5 ohms, an inductance of 15 henry. Initially, there's no current in the circuit. After 6 seconds, the EMF is replaced by a short circuit (OV). A. Find the current in the circuit at time t > 6 s. B. Find the voltage across the resistor after 12 seconds. Hint: In an inductive circuit, the current cannot change instantaneously.

4. A series RL circuit has an EMF of 50V, a resistance of 5 ohms, an inductance of 15 henry. Initially, there's no current in the circuit. After 6 seconds, the EMF is replaced by a short circuit (OV). A. Find the current in the circuit at time t > 6 s. B. Find the voltage across the resistor after 12 seconds. Hint: In an inductive circuit, the current cannot change instantaneously.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.3MCQ: If a phasor representation of a current is given by I=70.745A, it is equivalent to a. 100e/45 b....

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