Question

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 of the emf induced in the loop after exactly time 7.00 s has passed since the circumference of the loop started to decrease.

Answer #1

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...

Question 1: A 13.7 cm diameter loop of wire is initially
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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
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Assume that the loop...

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...

1) A circular loop of radius 3.53 cm contains 61 turns of
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A 26.8 cm-diameter loop of wire is initially oriented
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What is the magnitude of the average induced emf in the
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Express your answer using two significant figures.
Eavg=
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A circular conducting loop of radius 31.0 cm is located in a
region of homogeneous magnetic field of magnitude 0.300 T pointing
perpendicular to the plane of the loop. The loop is connected in
series with a resistor of 109 Ω. The magnetic field is now
increased at a constant rate by a factor of 2.40 in 15.0s.
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Inducing Voltage and Current
A circular conducting loop of radius 21.0 cm is located in a
region of homogeneous magnetic field of magnitude 0.900 T pointing
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Calculate the magnitude of the induced emf in the loop while the
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Calculate the...

A circular conducting loop of radius 13.0 cm is located in a
region of homogeneous magnetic field of magnitude 0.300 T pointing
perpendicular to the plane of the loop. The loop is connected in
series with a resistor of 285 Ω. The magnetic field is now
increased at a constant rate by a factor of 2.40 in 23.0s.
Calculate the magnitude of the induced emf in the loop while the
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Calculate the magnitude of the induced emf in the loop while the
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A circular conducting loop of radius 31.0 cm is located in a
region of homogeneous magnetic field of magnitude 0.100 T pointing
perpendicular to the plane of the loop. The loop is connected in
series with a resistor of 211 Ω. The magnetic field is now
increased at a constant rate by a factor of 2.80 in 17.0s.
1.) Calculate the magnitude of the induced emf in the loop while
the magnetic field is increasing.
2.) Calculate the magnitude of...

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