An 80 cm by 80 cm square loop of wire lies in the xy-plane and
has...
An 80 cm by 80 cm square loop of wire lies in the xy-plane and
has a resistance of 0.2 Ω. It sits in a time-dependent uniform
magnetic field of [0.6 sin (3π t)k] T. What is the
largest value that the induced current takes on?
A square single loop of wire 4.00 cm on a side with 875 turns
lies in the xy-plane. The loop is in a uniform magnetic
field that changes at a steady rate from B⃗
=(0.200T)i^+(0.150T)k^B→=(0.200T)i^+(0.150T)k^ at t = 0 to B⃗
=(0.300T)i^+(−0.200T)k^ B→=(0.300T)i^+(−0.200T)k^ at t=3.00s. At
the time t=2.00s,
a) find the magnitude of the induced emf in the coil.
b) Find the direction of the induced current in the coil as seen
from a point on the +z-axis.
5. A loop of wire (whose plane is in the xy plane), is moving in
the +x direction through a uniform B-field (5.0 T, directed into
the xy plane...ie., along the -z axis). What is direction of the
induced current in the loop?
a. Clockwise when viewed from the front
b. Counterclockwise when viewed from the front
c. The current direction alternates back and forth in the
loop
d. There is no induced current in the loop
6. Refer to...
The magnetic flux density in a region is given as ?=2.3???400?̂?+ 0.36???500?̂?+2.1cos256??̂ T.
A circular conducting loop with 20 turns and radius of 20 cm lies in the xy-plane in this region and has a resistance of 40 Ω. Determine the effective value of the induced current in the loop.
The plane of a rectangular loop of wire with a width of 5.0 cm
and a height of 8.0 cm is parallel to a magnetic field of magnitude
0.22 T . The loop carries a current of 6.7 A .
What torque acts on the loop?
What is the magnetic moment of the loop?
What is the maximum torque that can be obtained with the same
total length of wire carrying the same current in this magnetic
field?
A square loop of wire 0.17 m on a side lies on a horizontal
table and carries a counterclockwise current of 4.8 A. The
component of Earth’s magnetic field that is in the plane of the
loop is 2.4×10−5T and points toward the top of the loop.
Consider a horizontal axis of rotation that passes through the
center of the loop from left to right. Does the top wire of the
loop want to rotate toward you (up from the...
A long, straight wire lies on a horizontal table in the
xy-plane and carries a current of 2.50 microA in
the positive x-direction along the x-axis. A
proton is traveling in the negative x-direction at speed
3.1 x 104 m/s a distance d above the wire.
a) If you consider the moving proton as a "current", in what
direction is the magnetic field produced by the moving proton at
the location of the long straight wire?
b) In what direction...
A wire 80 cm long carries 11 A of current. From this
wire, a loop of 90-turns is made and placed in a magnetic field of
6.50 Tat an angle of 35˚. In first experiment, a square loop is
formed and in the second experiment, a circular loop is formed with
same number of turns. Calculate the torque in each loop. Which loop
produces more torque-the circular loop or the square loop? What is
the reason for this change of...
A square loop of wired with side length 2 cm is in the plane of
the page. At time t= 0, a 9 T magnetic field is directed into the
page. The field changes to 4 T directed into the page in 0.25
seconds.
What is the magnetic flux through the loop of wire at time, t =
0? What is the magnetic flux through the loop of wire 0.25 seconds
later?What is the emf induced in the loop of...
A square wire loop of side length a = 2.0 cm and resistance R =
10.0Ω is inside a 1.00m long solenoid with 1000 windings such that
the plane of the loop is perpendicular to the solenoid’s magnetic
field. The solenoid initially carries a current I = 6.0 A, which is
turned down to zero evenly over a period of 12.0 s. If the
solenoid’s initial magnetic field is out of the page in the figure,
what is the magnitude...
A loop of wire has a radius of 2.0 cm and is in a constant
magnetic field of 0.88 T directed into the plane of the paper. If
the loop collapses so the radius of the circle shrinks to zero in a
time of 0.35 s, a) find the magnitude of the average induced emf in
the loop. b) If the loop is part of a larger circuit, in which
direction does the induced current flow as the loop closes.