• B?I8In the figure above, a wire is oriented vertically across the screen with acurrent that is moving down. The direction of the magnetic field B at point to the leftof the wire isB?x) IIn the figure above, a wire is oriented perpendicular to the screen with acurrent that is moving in . The direction of the magnetic field B at point above thewire is

According to right hand thumb rule , when a current carrying wire is held in a right hand with only…

• B? I e In the figure above, a wire is oriented vertically across the screen with a current that is moving down. The direction of the magnetic field B at point to the lef of the wire is B? In the figure above, a wire is oriented perpendicular to the screen with a current that is moving in . The direction of the magnetic field B at point above the wire is

• B? I e In the figure above, a wire is oriented vertically across the screen with a current that is moving down. The direction of the magnetic field B at point to the lef of the wire is B? In the figure above, a wire is oriented perpendicular to the screen with a current that is moving in . The direction of the magnetic field B at point above the wire is

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter20: Induced Voltages And Inductance

Section20.3: Motional Emf

Problem 20.4QQ: A horizontal metal bar oriented east-west drops straight down in a location where Earth's magnetic...

See similar textbooks

Similar questions

A horizontal metal bar oriented east-west drops straight down in a location where Earth's magnetic field is due north. As a result, an emf develops between the ends. Which end is positively charged? (a) the east end (b) the west end (c) neither end carries a charge
You intend to move a rectangular loop of wire into a region of uniform magnetic field at a given speed so as to induce an emf in the loop. The plane of the loop must remain perpendicular to the magnetic field lines. In which orientation should you hold the loop while you move it into the region with the magnetic field to generate the largest emf? (a) with the long dimension of the loop parallel to the velocity vector (b) with the short dimension of the loop parallel to the velocity vector (c) either way because the emf is the same regardless of orientation
An example of magnetohydrodynamics (MHD) comes from the flow of a river (salty water). This fluid interacts with the Earth’s magnetic field to produce a potential difference between the two river banks. How would you go about calculating the potential difference?
A proton of speed v=6105m/s enters a region of uniform magnetic field of B = 0.5 T at an angle of q = 30° to the magnetic field. In the region of magnetic field proton describes a helical path with radius R and pitch p (distance between loops.) Find R and p.
Construct Your Own Problem Consider using the torque on a current-carrying coil in a magnetic field to detect relatively small magnetic fields (less than the field of the Earth, for example). Construct a problem in which you calculate the maximum torque on a current- carrying loop in a magnetic field. Among the things to be considered are the size of the coil, the number of loops it has, the current you pass through the coil, and the size of the field you wish to detect. Discuss whether the torque produced is large enough to be effectively measured. Your instructor may also wish for you to consider the effects, if any, of the field produced by the coil on the surroundings that could affect detection of the small field.
An electron moves with constant velocity through a region ofspace that is free of electric fields. Can one conclude that the magnetic field is zero in this region? Explain.
If you took a sample of magnetotactic bacteria from the northern hemisphere to the southern hemisphere, would you expect them to survive? Explain.
A bar of mass m and resistance R slides without friction in a horizontal plane, moving on parallel rails as shown. The rails are separated by a distance d. A battery that maintains a constant emf ε is connected between the rails, and a constant magnetic field B→ is directed perpendicularly out of the page. Assuming the bar starts from rest at time t = 0, show that at time t it moves with a speed υ = (ε)/(Bd) (1 - e-B2d2t/mR)
An electron and a proton are moving in circular orbits in the earth’s magnetic field, high above the earth’s atmosphere. The two particles move at the same speed. Which particle takes more time to complete one orbit? Explain.
I HAVE ATTCHED IMAGE WITH QUESTION!!! Two long parallel wires are 14 cm apart. What equal currents must be in the wires if the magnetic field halfway between them is to have a magnitude of 250 μT in the positive y direction (up in the figure)? Must the current be "parallel" or "antiparallel"?
A piece of aluminum is dropped vertically downward between the poles of an electromagnet. Does the magnetic field affect the velocity of the aluminum? Hint: See Conceptual Question 9.
A horseshoe magnet is held vertically with the north pole onthe left and south pole on the right. A wire passing betweenthe poles, equidistant from them, carries a current directlyaway from you. In what direction is the force on the wire?Explain.