The flexible loop in Figure has a radius of 20.7 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf ( in units of mV) in it ?during this time interval اخترأحد الخيارات A. 83.82 B. 58.11 C. 143.81 D. 186.66 E. 100.96

The flexible loop in Figure has a radius of 20.7 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf ( in units of mV) in it ?during this time interval اخترأحد الخيارات A. 83.82 B. 58.11 C. 143.81 D. 186.66 E. 100.96

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 27A

See similar textbooks

Similar questions

The square armature coil of an alternating current generator has 200 turns and is 20.0 cm on side. When it rotates at 3600 rpm, its peak output voltage is 120 V. (a) Wliat is the frequency' of the output voltage? (b) What is the strength of the magnetic field in which the coil is turning?
A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?
A solenoid is wound with 2000 turns pet meter. When the cuiient is 5.2 A, what is the magnetic field within the solenoid?
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 .
A flat, square coil of 20 turns that has sides of length 15.0 cm is rotating in a magnetic field of strength 0.050 T. If tlie maximum emf produced in die coil is 30.0 mV, what is the angular velocity of the coil?
Unreasonable results Frustrated by the small Hall voltage obtained in blood flow measurements, a medical physicist decides to increase the applied magnetic field strength to get a 0.500-V output for blood moving at 30.0 cm/s in a 1.50-cm-diameter vessel. (a) What magnetic field strength is needed? (b) What is unreasonable about this result? (C) Which premise is responsible?
(a) What is the speed of a supersonic aircraft with a 17.0-m wingspan, if it experiences a 1.60V Hall voltage between its wing lips when in level flight over the north magnetic pole, where the Earth's field strength is 8.00105T ? (b) Explain why very little current flows as a result of this Hall voltage.
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 loop of wire with a radius of 0.16 m and resistance, 47.4 Ohms is in a region with a changing magnetic field that is oriented perpendicular to the loop. If the magnetic field increases linearly from 0.011 T to 0.05 T, over 5.59 x 10-3 s, what is the current in the loop? Please give your answer in Amps.
A scientist wearing a circular metal cuff on his wrist moves his hand into a uniform magnetic field of 6T in 0.4s. If the diameter of the cuff is 6cm and the field is at an angle of 45 degrees with the plane of the metal cuff what is the magnitude of the average EMF induced within the band? If the cuff has a resistance of 1OHM what is the induced current then?
A circular loop made of copper wire with a diameter 0.96 mm is placed in a uniform magnetic field 0.274 T with field lines directed perpendicular to the loop plane. The shape of the loop is changed from circular to a square one. Find the total charge that flows in the conductor if the radius of the circular loop is 0.1 m. Use the copper resistivity 1.68E-8 Ohm⋅m.
If 42.7 cm of copper wire (diameter = 1.28 mm, resistivity = 1.69 × 10-8Q.m) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 7.93 m/s, at what rate is thermal energy generated in the loop? Number Units