With the switch in the circuit of Figure open, there is no current in R2. There is current in R1, however, and it is measured with the ammeter at the right side of the circuit. If the switch is closed, there is current in R2. What happens to the reading on the ammeter wher the switch is closed? (a) The reading increases. (b) The reading decreases. (c) The reading does not change. Ra R1 A

With the switch in the circuit of Figure open, there is no current in R2. There is current in R1, however, and it is measured with the ammeter at the right side of the circuit. If the switch is closed, there is current in R2. What happens to the reading on the ammeter wher the switch is closed? (a) The reading increases. (b) The reading decreases. (c) The reading does not change. Ra R1 A

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 18CQ: A steady current flows through a circuit with a large induct3ve time constant. When a switch in the...

See similar textbooks

Similar questions

Two infinite solenoids cross the plane of the circuit as shown below. The radii of the solenoids are 0.10 and 020 m, respectively, and the current in each solenoid is changing such that dB/dt50.0T/s . What are die currents in die resistors of the circuit?
Does the time required for the current in an RL circuit to reach any fraction of its steady-state value depend on the emf of the battery?
The coil whose lengthwise cross section is shown in the accompanying figure carries a currents I and has N evenly spaced turns distributed along the length I. Evaluate BdI for the paths indicated.
In the circuit sho in the accompanying figure, the rtd slides along the conducting rails at a constant VelOCity v. The velocity is in the same plane as the rails and directed at an angle 6 to them. A uniform magnetic field Bis directed out of the page. What is the emf induced in the r?
A steady current flows through a circuit with a large induct3ve time constant. When a switch in the circuit is opened, a large spark across the terminals of the switch. Explain.
The square loop in FigureP20.62 is made of wires with atotal series resistance of 10.0 Ω.It is placed in a uniform 0.100-Tmagnetic field directed perpendicularinto the plane ofthe paper. The loop, which ishinged at each corner, is pulledas shown until the separationbetween points A and B is 3.00 m. If this process takes 0.100 s,what is the average current generated in the loop? What is thedirection of the current?
Find the direction of the current in the resistor shown inFigure P20.16 (a) at the instant the switch is closed, (b) afterthe switch has been closed for several minutes, and (c) at theinstant the switch is opened.
How much time does it take for the current in an RL circuit withR = 130 Ω and L = 68 mH to reach half its final value?
Consider the circuit shown in Figure P20.43. Takeε = 6.00 V, L = 8.00 mH, and R = 4.00 Ω. (a) What is theinductive time constant of the circuit? (b) Calculate the currentin the circuit 250. µs after the switch is closed. (c) What isthe value of the final steady-state current? (d) How long doesit take the current to reach 80.0% of its maximum value?
In the circuit below, the switch has been in the open position for a long time. At t=0, the switch is turned on. If the current at time t=1.1 ms reaches 75% of its maximum value, R=25 Ω, and ℰ=15 V, find:the maximum value of the current, Imax= A.the time constant τ= ms,the inductance L= mH.If the switch is open again, after what time, the current will reach 25% of its value?t1/4= ms.
The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s. ΔVbattery = 60 V, C = 2.0 F, and R = 3.0 Ω. What is the current in the circuit immediately after the switch is closed, in Ampere?
Consider the systempictured in Figure P19.31.A 15 - cm length of conductorof mass 15 g, free tomove vertically, is placedbetween two thin, verticalconductors, and a uniformmagnetic field acts perpendicularto the page. When a5.0 - A current is directed asshown in the figure, the horizontalwire moves upward atconstant velocity in the presenceof gravity. (a) What forces act on the horizontal wire, andunder what condition is the wire able to move upward at constantvelocity? (b) Find the magnitude and direction of theminimum magnetic field required to move the wire at constantspeed. (c) What happens if the magnetic field exceedsthis minimum value? (The wire slides without friction on thetwo vertical conductors.)