The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions,and the external source of the magnetic field is turned off, in that order.BAВCDERank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only ">" or "=" symbols. Do not include anyparentheses around the letters or symbols.)Which instants have zero emf? Select all that apply.AEO O O C

Answered: Image /qna-images/answer/5be14ca6-6aae-4c76-a751-add5353b33ed.jpg

The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in that order. D Rank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.) Which instants have zero emf? Select all that apply.

The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in that order. D Rank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.) Which instants have zero emf? Select all that apply.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 84CP: The accompanying figure shows a metal disk of inner radius r1 and other radius r2 rotating at an...

See similar textbooks

Similar questions

The normal to tt plane of a single-turn conducting loop is directed at an angle to a spatially uniform magnetic field B. It has a fixed area and orientation relative to the magnetic fleck Show that the emf induced In the loop is given by i = (dB/dt)(Acos),where A is the area of the loop.
A coil with 50 turns and area 10cm2 is oriented with its plane perpendicular to a 0.75-T magnetic field. If the coil is flipped over (rotated through 180°) in 0.20 s, what is the average emf induced in it?
The magnetic field through a circular loop of radius 10.0 cm varies with time as shown below. The field is perpendicular to the loop. Plot the magnitude of the induced emf in the loop as a inaction of time.
A single-turn circular loop of wire of radius 50 mm lies in a plane perpendicular to a spatially uniform magnetic field. During a 0.10-s time interval, the magnitude of the field Increases uniformly from 200 to 300 mT. (a) Determine the emf Induced in the ioop. (b) If the magnetic field is directed out of the page, what is the direction of the cun-ent induced in the loop?
The accompanying figure shows a single-turn rectangular coil that has a resistance of 2. . The magnetic field at all points inside the coil varies according to B=B0eat,B0=0.25T and a = 200 Hz. What is the current induced in the coil at (a) t = 0.001 s, (b) 0.002 s, (c) 2.0 s?
The armature and field coils of a series-wound motor have a total resistance of 3.0 . When connected to a 120-V source and running at normal speed, the motor draws 4.0 A. (a) How large is tire back emf? (b) What current will the motor draw just after it is turned on? Can you suggest a way to avoid this large initial current?
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
Design a current loop that, when rotated in a uniform magnetic field of strength 0.10 T, will produce an emf =0 sin t. where 0=110V and 0=110V .
The accompanying figure shows a metal disk of inner radius r1 and other radius r2 rotating at an angular velocity while in a uniform magnetic field directed parallel to the rotational axis. The brush leads of voltmeter are connected to the dark's inner and outer surfaces as shown. What is the reading of the voltmeter ?
A 10-H inductor carries a current of 20 A. How much ice at 0ºC could be melted by the energy stored in the magnetic field of the inductor? (Hint: Use the value Lf= 334 J/g for ice.)
A long solenoid with n= 10 turns per centimeter has a cross-sectional area of 5.0 cm2and carries a current of 0.25 A. A coil with five turns encircles the solenoid. When the current through the solenoid is turned off, it decreases to zero in 0.050 s. What is the average emf induced in the coil?
A small, rectangular single loop of wire with dimensions 1, and a is placed, as shown in the plan of a much larger, rectangular single loop of wire. The two short sides of the larger loop axe so far from the smaller loop that their magnetic fields over the smaller fields over the smaller loop can be ignored. What is the mutual inductance of the two loops?