Question

A circular loop of wire having a radius of 8.52 cm carries a current of 0.149 A. A vector of unit length and parallel to the dipole moment of the loop is given by 0.60i – 0.80j. If the loop is located in a uniform magnetic field given by B = (0.280 T)i + (0.191 T)k, find (a) the x-component, (b) the y-component, and (c) the z-component of the torque on the loop and (d) the magnetic potential energy of the loop.

Answer #1

A circular loop of wire having a radius of 8.0 cm carries a
current of 0.20 A. A vector of unit length and parallel to the
dipole moment μ of the loop is given by 0.60
i-0.80 j. (This unit vector gives the
orientation of the magnetic dipole moment vector.) If the loop is
located in a uniform magnetic field given by
B=0.25 i+0.30 k T.
Find (a) the torque on the loop (in unitvector notation) and (b)
the orientation...

1) A circular loop of radius 3.53 cm contains 61 turns of
tightly wound wire. If the current in the windings is 0.634 A and a
constant magnetic field of 0.462 T makes an angle of 70.3 ◦ with a
vector perpendicular with the loop, what torque acts on the
loop?
2) The clockwise circulating current in a solenoid is increasing
at a rate of 13 A/s. The crosssectional area of the solenoid is
3.14159 cm2 , and there are...

A circular loop of wire with radius of 1.0 m lies in the xy
plane. A uniform 1.0 T external magnetic field is directed along
the z axis. The wire is a conductor, and carries current of 1.0
Amperes. What is the tension (or compression) in the wire due to
the external field?

The plane of a rectangular loop of wire 5 cm x 8 cm is parallel
to a magnetic field whose flux density is 0.15 w/m^2. (a) If the
loop carries a current of 10 amp, what torque acts on it? (b) 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 wire of length 74 cm is wound into a circular coil of 5 loops.
The coil carries a current 1.4 A. Find the maximum torque on the
coil in a uniform magnetic field of 2.3 T.

A circular coil with 200 turns has a radius of 2.0 cm. (a) What
current through the coil results in a magnetic dipole moment of 3.0
Am2 ? (b) What is the maximum torque that the coil will experience
in a uniform field of strength ? (c) If the angle between µ and B
is 45°, what is the magnitude of the torque on the coil? (d) What
is the magnetic potential energy of coil for this orientation?

A current carrying wire is bent into a closed semi-circular loop
of radius R that lies in the XY plane. The wire is in a uniform
magnetic field that is in the +z direction. Calculate the force
acting on the loop if R=42 cm, B= 1.2T.

A square current loop 4.6 cm on each side carries a 510 mA
current. The loop is in a 1.5 T uniform magnetic field. The axis of
the loop, perpendicular to the plane of the loop, is 30∘ away from
the field direction.
a) What is the magnitude of the torque on the current loop?

A
circular loop of wire is perpendicular to a 0.16 T uniform magnetic
field. The magnetic flux through the loop is 24 mWb. What is the
radius of the loop?

A current-carrying loop, made of 100 turns of a thin conducting
wire, has 4 cm and 10 cm. the current in the loop is 7 a. the plane
of the loop is parallel to a constant magnetic field of magnitude
0.2 T. is there any force acting on the loop? if so what are the
magnetic field and direction. is there a torque on the loop? if so,
what are its magnitudes and the direction? what is the maximum
possible...

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