A single hoop of metal wire is placed near a localized region of uniform magnetic field that is directed into the page. Which of the following processes will lead to an induced emf and induced current on the hoop? I. II. X ххх K XXX* ххх x X Hoop rotating clockwise (Axis is perpendicular to the page) xxx XXX X X X Decreasing magnetic field magnitude III. C X X X X хх X X X X X Hoop moving downward X ххх K **** A- A-- x x x K X X Hoop rotating about the horizontal axis X X X IV.

A single hoop of metal wire is placed near a localized region of uniform magnetic field that is directed into the page. Which of the following processes will lead to an induced emf and induced current on the hoop? I. II. X ххх K XXX* ххх x X Hoop rotating clockwise (Axis is perpendicular to the page) xxx XXX X X X Decreasing magnetic field magnitude III. C X X X X хх X X X X X Hoop moving downward X ххх K **** A- A-- x x x K X X Hoop rotating about the horizontal axis X X X IV.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A uniform magnetic field is applied paralle to the axis of a 60-turn circular coil with a radius of 6.0 cm and a resistance of 0.90 ̛. If the magnetic field increases uniformly from 0.20 T to 1.8 T in 0.20 s, what is the magnitude of the emf induced in the coil? A) 16 V B) 12 V C) 9.2 V D) 7.2 V E) 5.4 V
A circular coil of 50 turns and radius 8.0cm is placed with its plane oriented at 90 degrees to a magnetic field of .20 T. the field is now increased at a steady rate, reaching a value of .80T after 3.0 seconds. What emf is induced in the coil? a. 40V b. 0V c. 0.20V d. 0.0040V e. 2010V
In a region of space where the magnetic field of the earth has a magnitude of 80 mT and is directed 30° below the horizontal, a 50-cm length of wire oriented horizontally along an east-west direction is moved horizontally to the south with a speed of 20 m/s. What is the magnitude of the induced potential difference between the ends of this wire? a. 0.40 mV b. 0.35 mV c. 0.69 mV d. 0.45 mV e. 0.30 mV
6. The conducting rod shown in the accompanying figure moves along parallel metal rails that are 25-cm apart. The system is in a uniform magnetic field of strength 0.75 T, which is directed into the page. The resistances of the rod and the rails are negligible. a. What is the emf (including its sense) induced in the rod when it is moving to the right with a speed of 5.0 m/s? b. What force is required to keep the rod moving at this speed? c. What is the rate at which work is done by this force? d. What is the power dissipated in the resistor? B x M x x t x 25 cm 5.0 m/s 0.25 N * N
No Battery: A metal rod is dragged along two parallel rails in a uniform 0.36 T magnetic field, as shown in the figure below. The rails and the field extend for a total distance of 1.53 m. A voltmeter connects the two rails, which are 12 cm apart. V X X X X X X X X X The rod is dragged to the right at a constant speed of 3.00 m/s. What will the voltmeter register as the rod passes the halfway point? (A positive voltage indicates a clockwise current.)
6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r= 0.18 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.79 T. What is the magnitude of the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated rough half a revolution? Wb B (into paper)
A loop of wire with an area of 0.10 m² is in a uniform magnetic field that has an initial value of 4.0 T. The magnetic field is perpendicular to the plane of the loop, and is decreasing at a constant rate of 0.20 T/s. If the loop has a resistance of 0.500 N, what is the current induced in the loop? O A. - 0.04 A О В. О O C. 0.40 A O D. 0.04 A
The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.80 , and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let = 1.20 m. R * X x * x X X X x x X x x X X x x x * * x x * x x x x x x * X x x * * x Bin X *F X * app (a) Calculate the applied force required to move the bar to the right at a constant speed of 2.30 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W
A loop is placed in a region where the magnetic field is changing. At t = 0 s the magnetic field is 1 T directed into the page. Over a period of 2 s the field changes uniformly to 1 T directed out of the page. Which of the following describes the direction, clockwise (CW) or counterclockwise (CCW), of the induced EMF in the loop? a. CCW for 1 s, the CW for 1 s. b. CW for 2 s. c. CW for 1 s, then CCW for 1 s. d. CCW for 2 s.
6. A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.18 m. The normal to the plane of the loop is parallel to a constant magnetic field of magnitude 0.88 T. What is the magnitude of the change in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through quarter of a revolution? Wb B (into paper) 190of19 oof19 oon9 oof 19.0of19 oof19 o 19 0of19 oof19 oo of19 oof oof19 19 0of19 0of19 oof19 oof19 o0
A conducting bar of length moves to the right on two frictionless rails as shown in the figure below. A uniform magnetic field directed into the page has a magnitude of 0.310 T. Assume R = 8.70 and l = 0.340 m. l R * xxxxxx x x X x counterclockwise into the page out of the page x x x Bin (a) At what constant speed should the bar move to produce an 8.20-mA current in the resistor? m/s (b) What is the direction of the induced current? clockwise (c) At what rate is energy delivered to the resistor? mW
The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is R = 5.00 , and a 2.50-T magnetic field is directed perpendicularly downward, into the page. Let l = 1.20 m. R X * X x X X xxxxxx X e xxxxx X X xxxx x x xx x x x xx x xxx xxx x → X x> * X X *F X x X X Bin app (a) Calculate the applied force required to move the bar to the right at a constant speed of 1.70 m/s. N (to the right) (b) At what rate is energy delivered to the resistor? W