The figure below displays a circular loop of aluminum wire in a uniform magnetic field pointing into the page. The radius of the loop is 14.0 cm and the magnitude of the field is 0.110 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.250 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time?

The figure below displays a circular loop of aluminum wire in a uniform magnetic field pointing into the page. The radius of the loop is 14.0 cm and the magnitude of the field is 0.110 T. You grab points A and B and pull them in opposite directions, stretching the loop until its area is nearly zero, taking a time of 0.250 s to do so. What is the magnitude of the average induced emf in the loop (in mV) during this time?

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 fixed 19.7-cm-diameter wire coil is perpendicular to a magnetic field 0.57 T pointing up. In 0.25 s , the field is changed to 0.30 T pointing down. What is the average induced emf in the coil?
A coil formed by wrapping 55 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 36.0° with the direction of the field. When the magnetic field is increased uniformly from 200 µT to 600 µT in 0.400 s, an emf of magnitude 80.0 mV is induced in the coil. What is the total length of the wire? m
A fixed 11.1-cm-diameter wire coil is perpendicular to a magnetic field 0.73 T pointing up. In 0.14 s , the field is changed to 0.24 T pointing down. What is the average induced emf in the coil?
A coil of wire containing 800 circular loops with cross section of 60 cm2 is placed between the poles of a large electromagnet, where the magnetic field is uniform and at an angle of 30° with the plane of the coil. The field decreases at a rate of 0.23 T/s. What is the magnitude of the induced emf?
A wire loop with an area of 2.4×10−2 m2m2 is in a magnetic field of 0.40 TT directed at an angle 30∘ to the plane of the loop. If the field drops to zero in 41 ms , what is the average induced emf in the loop? Express your answer using two significant figures.
The face of a loop with a radius of 3 centimeters is perpendicular to a magnetic field that increases in magnitude from zero to 0.10 Tesla in 1 millisecond. What is the magnitude of the induced emf in the loop? If you look at the loop with the magnetic field facing you, in which direction (clockwise or counterclockwise) does the current flow around the loop?
An L = 41.0 cm wire is moving to the right at a speed of v = 8.50 m/s across two parallel wire rails that are connected on the left side, as shown in the figure. The whole apparatus is immersed in a uniform magnetic field that has a magnitude of B = 0.950 T and is directed into the screen. What is the emf & induced in the wire? E = The induced emf causes a current to flow in the circuit formed by the moving wire and the rails. In which direction does the current flow around the circuit? clockwise counterclockwise V x Ø 10 Ø Ø 10 10 Ø Ø
A fixed 12.4 cm diameter coil of wire is perpendicular to a magnetic field of 0.56 T pointing up. In 0.12 s, the field is changed to 0.35 T pointing down. What is the average induced emf in the coil?
A fixed 13.3-cmcm-diameter wire coil is perpendicular to a magnetic field 0.59 TT pointing up. In 0.19 ss , the field is changed to 0.27 TT pointing down. What is the average induced emf in the coil? Express your answer to two significant figures and include the appropriate units. E= ?
A solenoid ring with N = 3 loops is immersed in a uniform time-varying magnetic field (shown in the figure) whose strength is given by B = (1/4) sin(t/2) T, where t is in seconds. If the radius of the loop is r = 4m, what is the maximum magnitude of the EMF in the loop? At what time is the magnitude of the EMF at half its max value?
A coil with 35 turns sits in a magnetic field. The cross-sectional area of the coil is 5.1 cm2. If the magnetic field uniformly reduces from 1.0×101 T to 1.5 T in 6.5 seconds, what is the magnitude of the induced emf in that coil?