Question

The magnetic field perpendicular to a circular wire loop 8.0cm in diameter is changed from 0.70T toward the observer to 0.34T away from you in 160 milliSeconds.

Q1. Calculate the magnitude of the induced EMF (during the change in B ) and determine what direction will the induced current flow during the change in B? Will it be CW or CCW as you see it?

a) The initial Flux is:

b) The final Flux is:

c) The induced EMF is:

d) The direction of the EMF is:

Answer #1

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 26.8 cm-diameter loop of wire is initially oriented
perpendicular to a 1.6 T magnetic field. The loop is rotated so
that its plane is parallel to the field direction in 0.22 s .
What is the magnitude of the average induced emf in the
loop?
Express your answer using two significant figures.
Eavg=
V

A uniform magnetic field is perpendicular to the plane of a
circular loop of diameter 7.6 cm formed from wire of diameter 3.2
mm and resistivity of 1.83 × 10-8Ω·m. At what rate must
the magnitude of the magnetic field change to induce a 8.8 A
current in the loop?

Question 1: A 13.7 cm diameter loop of wire is initially
oriented perpendicular to a 1.9 T magnetic field. The loop is
rotated so that its plane is parallel to the field direction in
0.33 s .
Part A: What is the average induced emf in the loop?
Question 2: A 7.4 cm diameter circular loop of wire is in a 0.71
T magnetic field. The loop is removed from the field in 0.28 s .
Assume that the loop...

2. A circular coil with 30 turns of wire has a diameter of 2.00
cm. The total resistance of the coil is 0.350 Ω. An applied uniform
magnetic field is directed upward, perpendicular to the plane of
the coil.
a) If the magnetic field changes linearly from 0.000 T to 0.800
T in 0.500 s, what is the induced emf in the coil while the field
is changing?
b) What is the magnitude and direction (CW or CCW when looked...

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 loop of wire is in a magnetic field such that its axis is
parallel with the field direction. Which of the following would
result in an induced emf in the loop? Choose all that
apply.
1.Moving the loop outside of the magnetic field region.
2.Spin the loop such that its axis does not consistently line
up with the magnetic field direction.
3.Change the magnitude of the magnetic field.
4.Change the diameter of the loop

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.

Consider an electromagnet capable of producing a maximum
magnetic field of (2.50+A) T. A circular loop of wire with a
diameter of (4.50+B) cm is placed between the poles of the
electromagnet. What is the induced EMF in the loop, if the
electromagnet is turned on to full strength in (1.20+C)
milliseconds? Assume the loop is perpendicular to the magnetic
field. Calculate the answer in volts (V) and rounded to three
significant figures.
A: 1
B: 4
C: 6
Please...

A circular conductive loop of wire sits a centimeter away from a
straight, infinitely-long current-carrying wire. For each of the
following scenarios, predict the outcome and explain how you made
this prediction.
(a)The loop sits stationary near the wire and does not move. The
magnitude and direction of the current in the current-carrying wire
does not change. Is there an induced magnetic field in the
loop?
(b)The loop begins to move toward the infinitely-long
current-carryingwire. Is there an induced magnetic...

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