Question

A circular loop in the plane of the paper lies in a 0.38 T magnetic field pointing into the paper.

Part A: If the loop's diameter changes from 19.4 cm to 5.8 cm in 0.49 s , what is the direction of the induced current?

Part B: What is the magnitude of the average induced emf?

Answer #1

The answers are

A circular loop in the plane of the paper lies in a 0.65 T
magnetic field pointing into the paper. If the loop's diameter
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A circular loop in the plane of the paper lies in a 0.76 T
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0.56 s. What is the direction of the induced current? What is
the magnitude of the average induced emf?

A circular loop in the plane of a paper lies in a 0.75 TT
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What is the magnitude of the average induced emf?
What is the average induced current if the coil resistance is
4.3 Ω?

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
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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
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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 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.
1) Calculate the magnitude of the induced emf in the loop while
the magnetic field is increasing.
2) Calculate the magnitude of...

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
magnetic field is increasing.
Calculate the magnitude of the current...

A circular loop of wire of area 0.25?2 lies in the x-y plane
with its center at the origin. A uniform magnetic field of 2.00 T
points in the positive z-direction. The loop begins to rotate at t
= 0s at the rate of 60 rpm.
a. What is the flux through the loop as a function of time?
b. What is the emf in the loop as a function of time?
c. If the loop has a resistance of...

A circular conducting loop of radius 31.0 cm is located in a
region of homogeneous magnetic field of magnitude 0.100 T pointing
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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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