Current Attempt in Progress In the figure below, two straight conducting rails form a right angle. A conducting bar in contact with the rails starts at the vertex at time t 0 and moves with a constant velocity of 5.95 m/s along them. A magnetic field with B=0.325 T is directed out of the page. Calculate (a) the flux through the triangle formed by the rails and bar at t = 3.54 s and (b) the emf around the triangle at that time. (c) If the emf is eat", where a and n are constants, what is the value of n? (a) Number (b) Number (c) Number Units Units Units ... .

Current Attempt in Progress In the figure below, two straight conducting rails form a right angle. A conducting bar in contact with the rails starts at the vertex at time t 0 and moves with a constant velocity of 5.95 m/s along them. A magnetic field with B=0.325 T is directed out of the page. Calculate (a) the flux through the triangle formed by the rails and bar at t = 3.54 s and (b) the emf around the triangle at that time. (c) If the emf is eat", where a and n are constants, what is the value of n? (a) Number (b) Number (c) Number Units Units Units ... .

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 85CP: A square loop of side 2 cm is placed 1 cm from a long wire carrying a current that varies with time...

See similar textbooks

Similar questions

A metal bar of mass m slides without friction over two rails a distance D apart in the region that has a uniform magnetic held of magnitude B0 and direction perpendicular to the rails (see below). The two rails are connected at one end to a resistor whose resistance is much larger than the resistance of the rails and the bar The bar is given an initial speed of vg. It is found to slow down. How far does the bar go before coming to rest? Assume that the magnetic held of the induced current is negligible compared to B0
Consider the disk in the previous problem. Calculate tlie magnetic field at a point on its central axis that is a distance y above tlie disk,
The current through a circular wire loop of radius 10 cm is 5.0 A. (a) Calculate themagnetic dipole moment of the loop. (b) What is the torque on the loop if it is in a uniform 0.20-T magnetic field such that p and B are directed at 300 to each other? (C) For this position, what is the potential energy of the dipole?
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?
The accompanying figure shows a flat, infinitely long sheet of width a that carries a current I uniformly distributed across it. Find the magnetic field at the point P, which is in the plane of the sheet and at a distance x from one edge. Test your result for the limit a ? 0.
Is the direction of the magnetic field shown in Figure 24.6 (a) consistent with the right—hand rule for current (RHR-2) in the direction shown in the figure?
Explain why the magnetic field would not be unique (that is, not have a single value) at a point in space where magnetic field lines might cross. (Consider the direction of the field at such a point.)
Magnetic field inside a torus. Consider a torus of rectangular cross-section with inner radius a and outer radius b. N turns of an insulated thin wire are wound evenly on the toms tightly all around the torus arid connected to a battery producing a steady current f in the wire. Assume that the current on the top and bottom surfaces in the figure is radial, and the current on the inner and outer radii surfaces is vertical. Find the magnetic field inside the toms as a function of radial distance r from the axis.
A coil is moved through a magnetic field as shown below. The field is uniform inside the rectangle and zero outside. What is the direction of the induced current and what is the direction of the magnetic force on the coil at each position shown?
Check your Understanding Themagneticfield shown below Is confined to the cylindrical region shown and is changing withtime. Identity those paths for which =EdI0 .
For the coils in the preceding problem, what is the magnetic field at the center of either coil?
A charge of 4.0C .s distributed uniformly around a thin ring of insulating material. The ring has a radius of 0.20 m and rotates at 2.0104 rev/min around die axis that passes through its center and is perpendicular to the plane of the ring. What is the magnetic field at the center of the ring?