Question

shows a 100-turn coil of wire of radius 15 cm in a 0.25 T magnetic field. The coil is rotated 90? in 0.30 s, ending up parallel to the field. What is the average emf induced in the coil as it rotates?

Answer #1

a) A 550-turn solenoid, 28 cm long, has a diameter of 2.3 cm . A
15-turn coil is wound tightly around the center of the solenoid. If
the current in the solenoid increases uniformly from 0 to 4.6 A in
0.60 s , what will be the induced emf in the short coil during this
time?
b) A 15.5-cm-diameter loop of wire is initially oriented
perpendicular to a 1.4-T magnetic field. The loop is rotated so
that its plane is...

A fixed 11.8-cm-diameter wire coil is perpendicular to a
magnetic field 0.44 T pointing up. In 0.22 s, the field is changed
to 0.25 T pointing down.
What is the average induced emf in the coil?
Express your answer to two significant figures and include the
appropriate units.

An 1000-turn coil of wire that is 2.2 cm in diameter is in a
magnetic field that drops from 0.12 T to 0 T in 11 ms . The axis of
the coil is parallel to the field.
What is the emf of the coil?
E = ______V
Please show work

A fixed 12.1-cm-diameter wire coil is perpendicular to a
magnetic field 0.71 T pointing up. In 0.14 s , the field is changed
to 0.15 T pointing down.
What is the average induced emf in the coil?

A fixed 16.9-cm diameter wire coil is perpendicular to a
magnetic field 0.44 TT pointing up. In 0.28 s, the field is changed
to 0.30 TT pointing down.
What is the average induced emf in the coil?

A 149-turn circular coil of radius 2.67 cm is immersed in a
uniform magnetic field that is perpendicular to the plane of the
coil. During 0.153 s the magnetic field strength increases from
51.1 mT to 99.3 mT. Find the magnitude of the average EMF, in
millivolts, that is induced in the coil during this time
interval.

A circular coil of wire with 5 turns and a radius of 4.0 cm lies
flat on a table in a region where the magnetic field is 4.5 mT up.
The coil is flipped over in a time of 0.25 s. Is an emf induced in
the coil? If so, what is its average value?

A fixed 13.6-cm diameter wire coil is perpendicular to a
magnetic field 0.4 T
pointing up. In 0.30s, the field is changed to 0.24T pointing
down.
What is the average induced emf in the coil?

A 133 turn circular coil of radius 2.77 cm is immersed in a
uniform magnetic field that is perpendicular to the plane of the
coil. Over an interval of 0.121 s, the magnetic field strength
increases from 55.7 mT to 95.9 mT. Find the magnitude of the
average emf avgEavg induced in the coil during this time interval,
in millivolts.
avg=Eavg= ?

A fixed 15.6-cm-diameter wire coil is perpendicular to a
magnetic field 0.52 T pointing up. In 0.24 s, the field is changed
to 0.31 T pointing down. What is the average induced emf in the
coil? Express your answer to two significant figures and include
the appropriate units.

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