QUESTION 10A circuit is pulled with a 21-N force toward the right to maintain a constant speed v. At the instant shown, the loop is partially in and partialy out of a uniformmagnetic field that is directed into the paper. As the circuit moves, a 4.0-A current flows through a 6.0-W resistor.Which one of the following statements concerning this situation is true?X X x X X XX XX x xX X x X x X O The temperature of the circuit remains constant.The induced current flows clockwise around the circuit.Since the circuit moves with constant speed, the force F does zero work.If the circuit were replaced with a wooden loop, there would be no induced emf.As the circuit moves through the field, the field does work to produce the current

Given data: Current i=0A, Applied force F=21N

Answered: Which one of the following statements…

Science

Physics

Which one of the following statements concerning this situation is true?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 23CQ: A coil is moved through a magnetic field as shown below. The field is uniform inside the rectangle...

See similar textbooks

Similar questions

Use Lenzs law 10 answer the following questions concerning the direction of induced currents. Express your answers in terms of the letter labels a and b in each part of Figure P.31.22. (a) What is the direction of the induced current in the resistor R in Figure P.S1.22a when the bar magnet is moved to the left? (b) What is the direction of the current induced in the resistor R immediately after the switch S in Figure P31.22b is closed? (c) What is the direction of the induced current in the resistor R when the current I in Figure P31.22c decreases rapidly to zero?
A short rod of length a moves with its velocity vparallel to an infinite wire carrying a current I (see below). If the end of the rod nearer the wire is a distance b from the wire, what is the emf induced in the rod?
Eddy current are induced currents set up in a piece of metal when it moves through a nonuniform magnetic field. For example, consider the flat metal plate swinging at the end of a bar as a pendulum, as shown in Figure CQ20.9. (a) At position 1, the pendulum is moving from a region where there is no magnetic field into a region where the field B is directed into the paper. Show that at position 1 the direction of the eddy current is counterclockwise. (b) At position 2, the pendulum is moving out of the field into a region of zero field. Show that the direction of the eddy current is clockwise in this case. (c) Use right-hand rule number 2 to show that these eddy currents lead to a magnetic force on the plate directed at shown in the figure. Because the induced eddy current always produces a retarding force when the plate enters or leaves the field, the swinging plate quickly comes to rest. Figure CQ20.9
Eddy current are induced currents set up in a piece of metal when it moves through a nonuniform magnetic field. For example, consider the flat metal plate swinging at the end of a bar as a pendulum, as shown in Figure CQ20.9. (a) At position 1, the pendulum is moving from a region where there is no magnetic field into a region where the field B is directed into the paper. Show that at position 1 the direction of the eddy current is counterclockwise. (b) At position 2, the pendulum is moving out of the field into a region of zero field. Show that the direction of the eddy current is clockwise in this case. (c) Use right-hand rule number 2 to show that these eddy currents lead to a magnetic force on the plate directed at shown in the figure. Because the induced eddy current always produces a retarding force when the plate enters or leaves the field, the swinging plate quickly comes to rest. Figure CQ20.9
Referring to Figure 23.57(b), what is the direction of the current induced in the coil: (a) If the current in the wire increases? (b) If the current in fine wire decreases? (c) If the current in the wire suddenly changes direction? Explicitly show how you follow the steps in the Problem-Solving Strategy for Lenz’s Law.
A hypothetical current flowing in the z-direction creates the field B=C[(x/y2)i+(1/y)j] in the rectangular region of the xy-plane shown in the accompanying figure. Use Ampere’s law to find the current through the rectangle.
Plot the deflection angle of the compass needle in Problem 5 versus the current through the wire from 0 to 200 A. Is the compass needle a more sensitive measure for small currents or for large currents? Explain your answer.
Additional Problems Two circular loop of wire surround an insulating rod as in Figure P20.53. Loop I carries a current I in the clockwise direction when viewed from the left end. If loop I moves toward loop 2, which remains stationary, what is the direction of the induced current in loop 2 when slewed from the left end? Figure P20.53
Shown below is a conducting rod that slides along metal rails. The apparatus is in a uniform magnetic field of strength 0.25 T, which is directly into the page. The rod is pulled to the right at a constant speed of 5.0 m/s by a force . The only significant resistance in the circuit comes from the 2.0resistor shown. (a) What is the emf induced in the circuit? (b) What is the induced current? Does it circulate clockwise or counter clockwise? (c) What is the magnitude of(d) What are the power output of and the power dissipated in the resistor?
An American traveler in New Zealand carries a transformer to convert New Zealand’s standard 240 V to 120 V so that she can use some small appliances on her trip. (a) What is the ratio of turns in the primary and secondary coils of her transformer? (b) What is the ratio of input to output current? (c) How could a New Zealander traveling in the United States use this same transformer to power her 240 V appliances from 120 V?
A coil is moved through a magnetic field as shown below. The field is uniform inside the rectangle and zero outside. What is the direction of the induced current and what is the direction of the magnetic force on the coil at each position shown?
Verify than the direction of the line force in an MHD drive, such as that in Figure 22.32, does not depend on the sign of the charges carrying the current across the fluid.