bhy 70. ★★ The RL circuit in Figure 25-73 consists of an idealbattery; a resistor, R; an inductor, L; and a switch, S,that has three different positions: a, b, and N. Initially,the switch is in position N (the circuit is open). Afterthe circuit switch is moved to position a and time Atelapses, the current in the circuit reaches 50% of itsmaximum value. The switch remains in position a forthe time interval 107. After that, the switch is movedinto position b.(a) What is the time constant of this RL circuit?(b) What are the values of the electric current in thecircuit, the energy density in the coil, and the emfacross the coil(i)(ii)(iii)when the switch has been at position a for along time?after the switch has moved to position b andT seconds have elapsed?after the switch has moved to position b and37 seconds have elapsed?Support your answers with a graph of the electric cur-rent in the circuit versus time.a SN obRgL

Answered: Image /qna-images/answer/6e63ce9f-8440-4efc-ab56-2b00fb105d2c.jpg

70. ★★ The RL circuit in Figure 25-73 consists of an ideal battery; a resistor, R; an inductor, L; and a switch, S, 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. (b) (a) What is the time constant of this RL circuit? 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? 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. (ii) (iii) a S N b th R I voo L

70. ★★ The RL circuit in Figure 25-73 consists of an ideal battery; a resistor, R; an inductor, L; and a switch, S, 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. (b) (a) What is the time constant of this RL circuit? 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? 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. (ii) (iii) a S N b th R I voo L

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter21: Resistive-capacitive Series Circuits

Section: Chapter Questions

Problem 7RQ: An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a...

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