that has three different positions: a, b, and N. Initially, the switch is in position N (the circuit is open). After the circuit switch is moved to position a and time At elapses, the current in the circuit reaches 50% of its maximum value. The switch remains in position a for the time interval 107. After that, the switch is moved into position b. (a) What is the time constant of this RL circuit? (b) What are the values of the electric current in the circuit, the energy density in the coil, and the emf across the coil (i) when the switch has been at position a for a long time? after the switch has moved to position b and T seconds have elapsed? (ii) after the switch has moved to position b and 37 seconds have elapsed? Support your answers with a graph of the electric cur- rent in the circuit versus time. (iii) N S R 000

that has three different positions: a, b, and N. Initially, the switch is in position N (the circuit is open). After the circuit switch is moved to position a and time At elapses, the current in the circuit reaches 50% of its maximum value. The switch remains in position a for the time interval 107. After that, the switch is moved into position b. (a) What is the time constant of this RL circuit? (b) What are the values of the electric current in the circuit, the energy density in the coil, and the emf across the coil (i) when the switch has been at position a for a long time? after the switch has moved to position b and T seconds have elapsed? (ii) after the switch has moved to position b and 37 seconds have elapsed? Support your answers with a graph of the electric cur- rent in the circuit versus time. (iii) N S R 000

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter24: Resistive-inductive-capacitive Parallel Circuits

Section: Chapter Questions

Problem 1PP: The circuit in Figure 24-2 is connected to a 120-V, 60-Hz line. The resistor has a resistance of 36...

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