Question

A square loop of wire consisting of a single turn is
perpendicular to a uniform magnetic field. The square loop is then
re-formed into a circular loop, which also consists of a single
turn and is also perpendicular to the same magnetic field. The
magnetic flux that passes through the square loop is 5.15 ×
10^{-3} Wb. What is the flux that passes through the
circular loop?

Answer #1

I have used the formula for magnetic flux...

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 magnetic field is perpendicular to the plane of a single-turn
circular coil. The magnitude of the field is changing, so that an
emf of 0.23 V and a current of 2.4 A are induced in the coil. The
wire is then re-formed into a single-turn square coil, which is
used in the same magnetic field (again perpendicular to the plane
of the coil and with a magnitude changing at the same rate). What
(a) emf and (b) current are...

9. A magnetic field is perpendicular to the
plane of a single-turn circular coil. The magnitude of the field is
changing, so that an emf of 0.77 V and a current of 2.7 A are
induced in the coil. The wire is then re-formed into a single-turn
square coil, which is used in the same magnetic field (again
perpendicular to the plane of the coil and with a magnitude
changing at the same rate). What emf is induced in the...

A single-turn square loop of side L is centered on the
axis of a long solenoid. In addition, the plane of the square loop
is perpendicular to the axis of the solenoid. The solenoid has 1200
turns per meter and a diameter of 5.60 cm , and carries a current
of 2.15 A .
Part A: Find the magnetic flux through the loop
when L = 2.25 cm.
Φ1 = ____________ Wb
Part B: Find the magnetic flux through the...

A square loop of wire is held in a uniform 0.35 T magnetic field
directed perpendicular to the plane of the loop. The length of each
side of the square is decreasing at a constant rate of 4.0 cm/s.
What emf is induced in the loop when the length is 9.2 cm?

A 50 cm × 85 cm rectangular loop of wire is located in a region
of uniform magnetic field with a magnitude of B0=3.32
Telsa, and oriented perpendicular to the wire loop. The wire is
reshaped into a circular loop of radius r = 43 cm. What is the
change in the magnitude of the the magnetic flux through the loop
as a result of this change in shape?
2. A 60 cm×60 cm square loop of wire is placed...

A two-turn circular wire loop of radius 0.737 m lies in a plane
perpendicular to a uniform magnetic field of magnitude 0.591 T. If
the entire wire is reshaped from a twoturn circle to a one-turn
circle in 0.116 s (while remaining in the same plane), what is the
magnitude of the average induced emf E in the wire during this
time? Use Faraday’s law in the form E = − ∆(N Φ) ∆t . Answer in
units of V.

6: A single-turn circular loop of wire rests flat on this page.
A magnetic field is directed perpendicular to this page pointing
outwards (towards you). When the magnetic field strength increases
from 3.2 T to 6.5 T in 0.026 seconds, a 1 V emf is induced in the
coil.
a) Calculate the radius of the loop.
b) State the direction of the induced current and briefly
explain how you arrived at your answer.

The plane of loop with dimensions 10cm×10cm is initially
perpendicular to a uniform 0.5T magnetic field. Find the change in
flux through the loop if it is turned through 95 degrees about an
axis perpendicular to the field lines.

1.
A rectangular loop of wire with sides 0.142 and 0.528 m lies in
a plane perpendicular to a constant magnetic field (see part
a of the drawing). The magnetic field has a magnitude of
0.604 T and is directed parallel to the normal of the loop's
surface. In a time of 0.104 s, one-half of the loop is then folded
back onto the other half, as indicated in part b of the
drawing. Determine the magnitude of the average...

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