.In the shown figure two ider AB CD are sliding through a normal flux with a similar speed of (v) the induced e.m.f in one of them is 2 volts, so the total e.m.f induced in the rectangle is.. volts ...... h ?

.In the shown figure two ider AB CD are sliding through a normal flux with a similar speed of (v) the induced e.m.f in one of them is 2 volts, so the total e.m.f induced in the rectangle is.. volts ...... h ?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section25.1: Electric Current From Changing Magnetic Fields

Problem 1PP

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A loop of wire is moving near a long, straight wire carrying a constant current I as shown in Figure CQ31.10. (a) Determine the direction of the induced current in the loop as it moves away from the wire. (b) What would be the direction of the induced current in the loop if it were moving toward the wire?
A coil of area 0.100 m2 is rotating at 60.0 rev/s with the axis of rotation perpendicular to a 0.200-T magnetic field. (a) If the coil has 1 000 turns, what is the maximum emf generated in it? (b) What is the orientation of the coil with respect to the magnetic field when the maximum induced voltage occurs?
A square loop of side 2 cm is placed 1 cm from a long wire carrying a current that varies with time at a constant rate of 3 A/s as shown below. (a) Use Ampere’s law and find the magnetic field as a function of time from the current in the wire. (b) Determine the magnetic flux through the loop. (c) If the loop has a resistance of 3 how much induced current flows in the loop?
(a) If the emf of a coil rotating in a magnetic field is zero at t = 0, and increases to its first peak at t = 0.100 ms, what is the angular velocity of the coil? (b) At what time will its next maximum occur? (c) What is the period of the output? (d) When is the output first one-fourth at its maximum? (e) When is it next one-fourth at its maximum?
The circular conducting loops shown in the accompanying figure are parallel, perpendicular to the plane of the page, and coaxial. (a) When the switch S is dosed, what is the direction of the cun’ent induced in D? (b) When the switch is opened, what is the direction of the current induced in loop D?
(a) An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.00 T field with his fingers pointing in the direction of the field. Find the average emf induced in his wedding ling, given its diameter is 2.20 cm and assuming it takes 0.250 s to move it into the field. (b) Discuss whether this current would significantly change the temperature of the ring.
An inﬁnite solenoid with radius b has n turns per unit length. The current varies in time according to Iptq I0 cosωt (with positive deﬁned as shown in the ﬁgure, i.e., counterclockwise). A ring with radius r b and resistance R is centered on the solenoid’s axis, with its plane perpendicular to the axis.(a) What is the induced current in the ring? (b) A given little piece of the ring will feel a magnetic force. For what values of t is this force maximum? (c) What is the eﬀect of the force on the ring? In other words, does the force cause the ring to translate, spin, ﬂip over, stretch/ shrink, etc.?
1) The magnetic flux density in a region of free space is given by B = 2xy ax - 3y ay +2z az T. Find the total force on the rectangular loop shown which lies in the plane z = 0 and is bounded by x = 1, x = 2, y = 5, and y = 7, all dimensions in cm. with I=30 A, in anti-clock wise direction
Suppose that a circular parallel-plate capacitor has radius R = 4.5 cm and a plate separation of d = 6 mm. Starting from some time in the past, a potential difference V = V0 tanh[t] is applied across the plates, where V0 = 200 V. (a) What is the capacitance of the capacitor? (b) What is the maximum charge stored on the capacitor plates? (c) What happens to the electric field over time? Explain. (d) What is the magnetic field induced by this potential inside of the circular plates? (e) What is the magnetic field induced by this potential outside of the circular plates? (f) Plot the magnetic field as a function of position, for a given time. (g) Plot the magnetic field as a function of time, for a given position.
What is the maximum induced emf for the loop below if it is rotated around the y-axis given its area is 600 cm2 in a .320 T magnetic field ω= 35 rad/s? b) what about the x-axis? c) rotated about an edge parallel to the z-axis?
A single-turn circular loop has a radius of 10 cm, it is placed in a magnetic field of B = 0.8 T which is perpendicular to the plane of the loop, see the figure below. The loop is reshaped into a perfect square without stretching the length of the loop. It takes 0.74 s to reshape the loop. What is the magnetic flux through the loop before and after it is reshaped? initial flux? final flux? What is the magnitude of the average induced emf in the loop during the reshaping process?
The metal equilateral triangle shows, 20 cm on each side, is halfway into a 0.10 T magnetic field.a. What is the magnetic flux through the triangle?b. If the magnetic field strength decreases, what is the direction of the induced current in the triangle?