1. A constant current flows from -o to a location (0,0,0) over to a location (0,a,0)...
Find dB,(0,0,0), the z component of the magnetic field at the point x =y=z=0 from the current I flowing over a short distance di = dl ſ located at the point 7c = x1 1 î. (Figure 3) Express your answer in terms of I, 21, MO, A, and dl. Recall that a component is a scalar, do not enter any unit vectors. View Available Hint(s) ΑΣΦ ? dB (0,0,0) =
ELECTRODYNAMICS
A current flows along a wire which has its two endings forming angle of zero: an Note that O is the center of the semicircular arc of radius R. a) Calculate the magnetic field B at O. H Now there is an angle alpha different from zero between the two endings: a R Note that the semicircle still has the same radius R b) Calculate the magnetic field B at O under this new scenario. Compare this result with...
A current I flows around a circuit in the shape of a regular hexagon of side s (a) Determine the magnetic field at the center of the hexagoin (b) Evaluate for the case 1 12 A., s -15 cm. (c) Compare your result with the magnetic field created at the center of a circle of radius s, and comment.
1. Force on Current Segments A current i flows from A to C and then around the corner to D. Let the distances AC a and CD- b. The magnetic field B is constant, parallel to the positive x-axis. What is the force F, due to B felt by the segments? 2. Moving Rod and Induced Current A metal rod AD is sliding to the right at speed v along the parallel metal railings. The resistance connecting the railings is...
In what direction is the magnetic force on a current-carrying wire if the current flows to the left (-x) and the uniform magnetic field points out of the page? a. right b. left c. up d. down e. into the page f. out of the page
A wire coil lies horizontally on a table. A current flows clockwise in the coil (when viewed from above). A magnetic field is present. The torque on the coil will be maximum when the magnetic field points? A. Straight up B. Straight down C. Horizontally
The size of the magnetic force on a straight wire of length
L carrying current I in a uniform magnetic field
with strength B is
F=ILBsin(?).
Here ? is the angle between the direction of the
current (along the wire) and the direction of the magnetic field.
Hence Bsin(?) refers to the component of the
magnetic field that is perpendicular to the wire, B?. Thus
this equation can also be written as
F=ILB?.
The direction of the magnetic force on...
A square loop of wire with a small resistance is moved with
constant speed from a field free region into a region of uniform B
field (B is constant in time) and then back into a field free
region to the left. The self inductance of the loop is
negligible.
When entering the field the coil experiences a magnetic force to
the left.
When leaving the field the coil experiences a magnetic force to the
right.
Upon entering the field,...
A square loop of wire with a small resistance is moved with constant speed from a field free region into a region of uniform B field (B is constant in time) and then back into a field free region to the right. The self inductance of the loop is negligible. True or False? Upon entering the field, a clockwise current flows in the loop. When entering the field the coil experiences a magnetic force to the left. Upon leaving the...
(7) Now, if a positive charge is placed to the right side of the current and is moving upward, the charge will experience a magnetic force in which direction? A. B. C. D. E. Out the page Into the page To the right To the left Downward (8) A flat conducting loop is positioned in a uniform magnetic field directed along the x axis. For what orientation of the loop is the flux through it a maximum? A. When the...