10. A 2cm by 2cm square coil is in a 1.0 T magnetic field as shown below. The coil is pulled out of the field with a V- 2 m/s constant velocity of 2 m/s. a. At what point is an emf induced? Why? b. What is the value of the induced emf? c. What is the direction of the induced current in the loop? 11. In the diagram below the length of the moving conductor L=0.25m (you may assume that this is the distance from "rail to rail"). The strength of the magnetic field is 0.25T. If you need 1.5V of induced emf to light the Fhand hand bulb, and the maximum distance the bar can move is 1m, how much time must the bar be moved? O olo O O OO OO OO

10. A 2cm by 2cm square coil is in a 1.0 T magnetic field as shown below. The coil is pulled out of the field with a V- 2 m/s constant velocity of 2 m/s. a. At what point is an emf induced? Why? b. What is the value of the induced emf? c. What is the direction of the induced current in the loop? 11. In the diagram below the length of the moving conductor L=0.25m (you may assume that this is the distance from "rail to rail"). The strength of the magnetic field is 0.25T. If you need 1.5V of induced emf to light the Fhand hand bulb, and the maximum distance the bar can move is 1m, how much time must the bar be moved? O olo O O OO OO OO

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 34P: When a magnetic field is first turned on, t1 flux through a 20-turn loop varies with time according...

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Similar questions

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?
Integrated Concepts A 200-turn flat coil of wire 30.0 cm in diameter acts as an antenna for FM radio at a frequency of 100 MHz. The magnetic field of the incoming electromagnetic wave is perpendicular to the coil and has a maximum strength of 1.001012T. (a) What power is incident on the coil? (b) What average emf is induced in the coil over one-fourth at a cycle? (c) If the radio receiver has an inductance at 2.50 (H, what capacitance must it have to resonate at 100 MHz?
When a magnetic field is first turned on, t1 flux through a 20-turn loop varies with time according to m=5.0t22.0t ,where m is in milliwebers, tis in seconds, and the loop is in the plane of the page with the unit normal pointing outward. (a) What is the emf induced in the loop as a function of time? What is the direction of the induced current at (b) t= 0, (c) 0.10, (d) 1.0, and (e) 2.0 s?
An N-turn circular wire coil of radius r lies in the xy-plane (the plane of the page), as in Figure P20.10. A uniform magnetic field is turned on, increasing steadily from 0 to B0 in the positive z-direction in t seconds. (a) Find a symbolic expression for the emf, , induced in the coil in terms of the variables given. (b) looking down on at the xy-plane from the positive z-axis, is the direction of the induced current clockwise or counterclockwise? (c) If each loop has resistance R, find an expression for the magnitude of the induced current, I.
What is the value of the magnetic flux through the coil in Figure 23.56 (b) due to the wire?
(a) A nonferrous screwdriver is being used in a 2.00 T magnetic field. What maximum emf can be induced along its 12.0 cm length when it moves at 6.00 m/s? (b) Is it likely that this emf will have any consequences or even be noticed?
A rectangular conducting loop is placed near a long wire carrying a current I as shown in Figure OQS1.3. If I decreases in time, what can be said of the current induced in the loop? (a) The direction of the current depends on the size of the loop. (b) The current is clockwise. (c) The current is counterclockwise. (d) The current is zero. (e) Nothing can he said about the current in the loop without more information.
What is the peak emf generated by rotating a 1000-turn, 20.0 cm diameter coil in the Earth’s 5.00105T magnetic field, given the plane of the coil is originally perpendicular to the Earth’s field and is rotated to be parallel to the field in 10.0 ms?
An N-turn circular wire coil of radius r lies in the xy-plane (the plane of the page), as in Figure P20.10. A uniform magnetic field is turned on, increasing steadily from 0 to B0 in the positive z-direction in t seconds. (a) Find a symbolic expression for the emf, , induced in the coil in terms of the variables given. (b) looking down on at the xy-plane from the positive z-axis, is the direction of the induced current clockwise or counterclockwise? (c) If each loop has resistance R, find an expression for the magnitude of the induced current, I.
(a) A car generator turns at 400 rpm when 1he engine is idling. Its 300-turn, 5.00 by 8.00 cm rectangular coil rotates in an adjustable magnetic field 50 that it can produce suf?cient voltage even at low rpms. What is the field strength needed to produce a 24.0 V peak emf? (b) Discuss how this required field strength compares to those available in permanent and electromagnets.
A magnetic field of magnitude 0.300 T is oriented perpendicular to the plane of a circular loop. (a) Calculate the loop radius if the magnetic flux through the loop is 2.70Wb. (b) Calculate the new magnetic flux if the loop radius is doubled.
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?