Question

A circular loop of wire lies in the x-y plane and has a radius of 7.50 cm. There is a uniform B field in the z direction with a sinusoidal varying strength of B_o sin?(?t) Where B_o=1.7*?10?^(-6) T and the frequency f is 1200 kHz. What is the angular frequency of the B-field? What is the period of a single cycle for the B-field? What is the maximum flux in the coil of wire? What is the minimum flux in the coil of wire? What is the average induced emf in the coil of wire during a half cycle of the B-field? (In the time between a maximum and minimum flux in the coil)

Answer #1

*This concludes the answers. If you need any more clarification,
modification or correction, feel free to ask.*

A circular loop of wire of radius R lies in the
xy-plane, where a time-varying, radially symmetric
magnetic field of magnitude B = k r
t3 (in SI units) points in the
positive z-direction. Here, t is time, r
is the distance from the centre of the loop, and k is a
positive constant.
(i) What must be the SI units of k ?
(ii) Calculate the magnetic flux Φm through the loop
as a function of time t. ...

A circular loop in the plane of the paper lies in a 0.78 T
magnetic field pointing into the paper.
A) What is the magnitude of the average induced emf? Answer in
V.
B) If the coil resistance is 4.3 ohm , what is the average
induced current? Answer in A

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.

A circular loop in the plane of the paper lies in a 0.75 T
magnetic field pointing into the paper. The loop’s diameter is
changed from 20.0 cm to 6.0 cm in 0.50 s.
Determine the direction of the induced current and justify your
answer.
Determine the magnitude of the average induced emf.
If the coil resistance is 2.5 Ω, what is the average induced
current?

A circular loop of wire with area 0.020 m2m2 lies in the
x-y plane. Initially there's a magnetic field of 3.6 TT in
the -z-direction. The field remains constant for 11 ss ,
then decreases gradually to zero in 11 ss , and then remains zero
for 11 ss .
Part A: Find the magnitude of the induced emf in the loop for
the first 11 ss interval.
Express your answer to two significant figures and include the
appropriate units....

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?

A circular loop in the plane of a paper lies in a 0.75 TT
magnetic field pointing into the paper. The loop's diameter changes
from 20.5 cmcm to 6.4 cmcm in 0.46 ss .
What is the magnitude of the average induced emf?
What is the average induced current if the coil resistance is
4.3 Ω?

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.

A time-varying magnetic field is perpendicular to the plane of a
circular loop of diameter 10 cm made with wire of diameter 3.4 mm
and resistivity 2.07 × 10-8?·m.
The magnetic field increases as a function of time, with magnitude
B = (0.79 t) T/s
a) What is the magnitude of the emf induced in the loop?
b) What is the value of the current through the loop?
c) At what rate does energy appear as thermal energy in the...

A circular coil of wire with 5 turns and a radius of 4.0 cm lies
flat on a table in a region where the magnetic field is 4.5 mT up.
The coil is flipped over in a time of 0.25 s. Is an emf induced in
the coil? If so, what is its average value?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 3 minutes ago

asked 4 minutes ago

asked 6 minutes ago

asked 7 minutes ago

asked 12 minutes ago

asked 12 minutes ago

asked 12 minutes ago

asked 20 minutes ago

asked 21 minutes ago

asked 25 minutes ago

asked 25 minutes ago