7. A circular loop of wire of radius 0.399 m and a resistance of 0.500 Ohms is placed in a spatially uniform magnetic field indicated by the array of x's. The magnitude of this primary (or causative) magnetic field varies according to B(t) = (0.050 T/s²)t². a. Qualitatively, does Faraday's Law of magnetic induction depend on the direction of the primary magnetic field or the direction of the change in the direction of the primary magnetic field? b. Starting at t = 0 and continuing into the future, where does the change in the primary magnetic field point? c. Apply Faraday's law and determine the direction of the necessary induced magnetic field. d. Use the right hand rule to then infer the direction of the induced current in the loop. Substitute the above primary magnetic field into Faraday's law and derive an equation for

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7. A circular loop of wire of radius 0.399 m and a resistance of 0.500 Ohms is placed in a spatially
uniform magnetic field indicated by the array of x's. The magnitude of this primary (or
causative) magnetic field varies according to B(t) = (0.050 T/s²)t².
a. Qualitatively, does Faraday's Law of magnetic induction depend on the direction of the
primary magnetic field or the direction of the change in the direction of the primary
magnetic field?
Starting at t = 0 and continuing into the future, where does the change in the primary
magnetic field point?
Apply Faraday's law and determine the direction of the necessary induced magnetic field.
Use the right hand rule to then infer the direction of the induced current in the loop.
Substitute the above primary magnetic field into Faraday's law and derive an equation for
the induced voltage (EMF, E).
Calculate the time, t when the magnitude of the primary magnetic field is 32.0 mT.
For the time found in part (f) use your result from part (e) to calculate the amount of
induced current flowing in the loop. Don't forget units.
b.
c.
d.
e.
f.
g.
X
X X X
X
X X X X
X
X
X
X
X
XX
X
X
X
X X X
X X X
X
X
X
X X
X X
X X
Transcribed Image Text:7. A circular loop of wire of radius 0.399 m and a resistance of 0.500 Ohms is placed in a spatially uniform magnetic field indicated by the array of x's. The magnitude of this primary (or causative) magnetic field varies according to B(t) = (0.050 T/s²)t². a. Qualitatively, does Faraday's Law of magnetic induction depend on the direction of the primary magnetic field or the direction of the change in the direction of the primary magnetic field? Starting at t = 0 and continuing into the future, where does the change in the primary magnetic field point? Apply Faraday's law and determine the direction of the necessary induced magnetic field. Use the right hand rule to then infer the direction of the induced current in the loop. Substitute the above primary magnetic field into Faraday's law and derive an equation for the induced voltage (EMF, E). Calculate the time, t when the magnitude of the primary magnetic field is 32.0 mT. For the time found in part (f) use your result from part (e) to calculate the amount of induced current flowing in the loop. Don't forget units. b. c. d. e. f. g. X X X X X X X X X X X X X X XX X X X X X X X X X X X X X X X X X X
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