•5 In Fig. 29-37, a current i = 10 A is set up in a long hairpin conductor formed by bending a wire into a semicircle of radius R= 5.0 mm. Point Figure 29-36 Problem 4. b is midway between the straight sec- tions and so distant from the semicir- cle that each straight section can be approximated as being an infinite wire. What are the (a) magnitude and (b) direction (into or out of the page) of B at a and the (c) magnitude and (d) direction of B at b? Figure 29-37 Problem 5.

•5 In Fig. 29-37, a current i = 10 A is set up in a long hairpin conductor formed by bending a wire into a semicircle of radius R= 5.0 mm. Point Figure 29-36 Problem 4. b is midway between the straight sec- tions and so distant from the semicir- cle that each straight section can be approximated as being an infinite wire. What are the (a) magnitude and (b) direction (into or out of the page) of B at a and the (c) magnitude and (d) direction of B at b? Figure 29-37 Problem 5.

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 22PE: In the August 1992 space shuttle flight, only 250 m of the conducting tether considered in Example...

See similar textbooks

Similar questions

(III) In Fig. 21–11, the rod moves with a speed of 1.16 m/s onrails 30.0 cm apart. The rod has a resistance of 2.5Ω Themagnetic field is 0.35 T, and the resistance of theconductor is 21.0Ω at a given instant. Calculate (a) theinduced emf, (b) the current in the conductor,and (c) the external force needed to keep the rod’s velocityconstant at that instant.
If you have three parallel wires in the same plane, with currents in the outer two running in opposite directions, is it possible for the middle wire to be repelled by both? Attracted by both? Explain.
. (II) A third wire is placed in the plane of the two wiresshown in Fig. 20–57 parallel and just to the right. If itcarries 25.0 A upward, what force per meter of length doesit exert on each of the other two wires? Assume it is 2.8 mmfrom the nearest wire, center to center
Using information in Example 20.6, what would the Hall voltage be if a 2.00T field is applied across a 10-gauge copper wire (2.588 mm in diameter) carrying a 20.0-A current?
Explain why B=0 inside a long, hollow copper pipe that is carrying an electric current parallel to the axis. Is B=0 outside the pipe?
Integrated Concepts One long straight wire is to be held directly above another by repulsion between 1heir currents. The lower wire carries 100 A and the wire 7.50 cm above it is 10gauge (2.588 mm diameter) copper wire. (a) What current must flow in the upper wire, neglecting the Earth’s field? (b) What is the smallest current if the Earth’s 3.00105T field is parallel to the ground and is not neglected? (c) Is the supported wire in a stable or unstable equilibrium if displaced vertically? If displaced horizontally?
In the August 1992 space shuttle flight, only 250 m of the conducting tether considered in Example 23.2 could be let out. A 40.0 V motional emf was generated in me Earth’s 5.00105T field, while moving at 7.80103m/s. What was the angle between the shuttle’s velocity and the Earth’s field, assuming the conductor was perpendicular to the field?
Hall potentials are much larger for poor conductors than for good conductors. Why?
(III) A long copper strip 1.8 cm wide and 1.0 mm thick isplaced in a 1.2-T magnetic field as in Fig. 20–21a. When asteady current of 15 A passes through it, the Hall emf ismeasured to be 1.02µV. Determine (a) the drift velocity ofthe electrons and (b) the density of free (conducting) electrons (number per unit volume) in the copper.
Suspending Suspending a wire with a current. A horizontal wire carries a current I1 = 80 A dc. A second parallel wire 20 cm below it (Fig. 28-7) must carry how much current I2 so that it doesn't fall due to gravity? The lower wire has a mass of 0.12 g per meter of length.
If you have three parallel wires in the same plane, as in Figure, with currents in the outer two running in opposite directions, is it possible for the middle wire to be repelled by both? Attracted by both? Explain.
5- The 5 cables in the figure are perpendicular to the screen and in the directions shown in the figure; They carry a current of i1 = i2 = 0.75 A and i3 = i5 = 0.50 A. So, for the Ampere Ring in the figure, if $B.di = 1.90 x 10-6 T.m, which of the options is the value of i4 correctly? (Ho = 4pi * 10-7 T.m/A) A) 2,50 A B) 2,00 A C) 0,50 A D) 1,00 A E) 1,50 A