(100) A loop of wire sits in a uniform magnetic field as shown in the figure. The area of the loop is 25 cm?. The strength of the magnetic field is 5.0 x 104 Tesla. Into The magnetic field strength is increased so that after 20 seconds it has a value of 10.0 x 104 Tesla. What is the EMF induced in the loop? paper What is the direction of the current induced in the loop? Describe the reasoning you used to determine the direction of the current in the loop. Be sure to mention Lenz's law and state how you used it to arrive at your conclusion.

(100) A loop of wire sits in a uniform magnetic field as shown in the figure. The area of the loop is 25 cm?. The strength of the magnetic field is 5.0 x 104 Tesla. Into The magnetic field strength is increased so that after 20 seconds it has a value of 10.0 x 104 Tesla. What is the EMF induced in the loop? paper What is the direction of the current induced in the loop? Describe the reasoning you used to determine the direction of the current in the loop. Be sure to mention Lenz's law and state how you used it to arrive at your conclusion.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 27PE: Figure 23.59 A coil is moved into and out of a region of uniform magnetic field. A coil is moved...

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Check Your Understanding Shown below is a rod of length l that is rotated counterclockwise around the axis through O by the torque due to mg . Assuming that the rod is in a uniform magnetic field B , what is the emf induced between the ends of the rod when its angular velocity is ? Which end of the rod is at a higher potential?
The accompanying figure shows a conducting ring at various positions as It moves througli a magnetic field. What is the sense of the induced em! for each of those positions?
Is Ampere’s law valid for all closed paths? Why isn’t it normally useful for calculating a magnetic field?
Two long, parallel wires cy equal currents in opposite directions. The radius of each wire is a, and the distance between the centers of the wires is d, Show that if the magnetic flux within the wires themselves can be ignored, the self-inductance of a length 1 of such a pair of wires is L 0 l in d1 a (Hint Calculate the magnetic flux through a rectangle of length 1 between the wires and then use L=N/I
Figure 23.59 A coil is moved into and out of a region of uniform magnetic field. A coil is moved through a magnetic field as shown in Figure 23.59. 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?
A current is induced in a circular loop of radius 1.5 cm between two poles of a horseshoe electromagnet when the current in the electromagnet is varied. The magnetic Field in the area of the loop is perpendicular to the area and has a uniform magnitude. If the rate of change of magnetic field is 10 T/s, find the magnitude and direction of the induced current if resistance of the loop is 25 .
How would you position a flat loop of wire in a changing magnetic field so that there is no Induced emf in the loop?
12.7 Check Your Understanding What is the ratio of the magnetic field produced from using a finite formula over the infinite approximation for an angle of (a) 85°? (b) 89°? The solenoid has 1000 mins in 50 cm with a current of 1.0 A flowing through the coils
Check Your Understanding. A current I(t)=(5.0A)sin((200rad/s)t) flows through the solenoid of part (b) of Example 14.1. What is the maximum emf induced in the surrounding coil?
12.3 Check Your Understanding Using Example 12.3, keeping the currents the same in wires 1 and 3, what should the current be in wire 2 to counteract the magnetic fields horn wires 1 and 3 so that there is no net magnetic field at point P?
Repeat Exercise 22.41, but with the loop lying flat on the ground with its current circulating counterclockwise (when viewed from above) in a location where the Earth’s field is north, but at an angle 45.0° below the horizontal and with a strength at 6.00105T.
Check Your Understanding Using Example 12.5, at what distance would you have to move the first coil to have zero measurable magnetic field at point P?