Question

A 1000 turn loop of wire has a radius of 7 centimeters. It is placed in a uniform magnetic field at an angle of 30o with a magnitude that is changing at a rate of 4/10 Tesla per second. Find the magnitude of the emf induced in the antenna.Immersive Reader

Answer #1

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 wire loop of radius rr = 16 cmcm is immersed in a
uniform magnetic field BB = 0.375 TT with its plane normal to the
direction of the field.
If the field magnitude then decreases at a constant rate of
−1.2×10−2 T/sT/s , at what rate should rr increase so
that the induced emf within the loop is zero?

A wire loop of radius 10 cm has a resistance of 2.0
?. The loop is at right angles to a uniform magnetic field B. The
field strength is changing at a rate of ?B/?t = 0.10 T/s. What is
themagnitude of the induced current in the
loop?
A. 4.3
mA
B. 0.3 mA
C. 2.9 mA
D. 1.0 mA
E. 1.6 mA

A five-turn circular wire coil of radius 0.425 m lies in a plane
perpendicular to a uniform magnetic field of magnitude 0.370 T. If
the wire is reshaped from a five-turn circle to a three-turn circle
in 0.101 s (while remaining in the same plane), what is the average
induced emf in the wire during this time?

Shrinking Loop. A circular loop of flexible
iron wire has an initial circumference of 170 cmcm , but its
circumference is decreasing at a constant rate of 14.0 cm/scm/s due
to a tangential pull on the wire. The loop is in a constant uniform
magnetic field of magnitude 0.800 TT , which is oriented
perpendicular to the plane of the loop. Assume that you are facing
the loop and that the magnetic field points into the loop
A. Find the...

A circular loop of wire with an area of .1m^2 is placed in a 2T
magnetic field. The field increases at a rate of 0.2 T/S. What is
the induced emf in the loop? What is the direction of the induced
current in the loop?

6. A small 20-turn wire loop of area 5 mm2 is placed inside a
long solenoid that has 12000 turns/m and carries a sinusoidally
varying current i of amplitude 3 A and angular frequency 500 rad/s.
The central axes of the loop and solenoid coincide. What are the
(a) magnetic field inside the loop? (b) magnetic flux trough the
loop? (c) amplitude of emf induced in the loop?

Shrinking Loop. A circular loop of flexible iron wire has an
initial circumference of 168 cm , but its circumference is
decreasing at a constant rate of 10.0 cm/s due to a tangential pull
on the wire. The loop is in a constant uniform magnetic field of
magnitude 1.00 T , which is oriented perpendicular to the plane of
the loop. Assume that you are facing the loop and that the magnetic
field points into the loop. Find the magnitude...

A circular coil of 312 winds of wire (radius = 7.0 cm,
resistance = 7.4 Ω) is placed in a uniform magnetic field that is
perpendicular to the plane of the loop. The magnitude of the field
changes with time according to ? = 90sin(7?) mT, where ? is
measured in seconds. Determine the magnitude of the current induced
in the loop at ?=?/7 s.

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.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 11 minutes ago

asked 16 minutes ago

asked 31 minutes ago

asked 37 minutes ago

asked 39 minutes ago

asked 42 minutes ago

asked 47 minutes ago

asked 48 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago