Question

A circle with a radius of 0.4 meters is placed in the
x-y plane in a magnetic field directed in the -z direction. It is
wound once and its resistance is 6 Ohms. The initial magnetic field
is 0.6 Tesla. The magnetic field is then changed in 0.7 s and the
average induced current is 0.03 amps running counter-clockwise.
First, find the final magnetic field to needed to induce this
average current.

Then, the magnetic field (still in the -z direction) is held
constant at the value of the final magnetic field that was just
found. Then, the wire is reshaped into a square that is wound once
in a time of 0.006 seconds. If the resistance does not change, what
is the average induced current, in amps, when the wire changes
shape? If it's clockwise include a negative sign.

Answer #1

A circle with a radius of 0.3 meters is placed in the x-y plane
in a magnetic field directed in the -z direction. It is wound once
and its resistance is 6 Ohms. The initial magnetic field is 0.8
Tesla. The magnetic field is then changed in 0.6 s and the average
induced current is 0.03 amps running counter-clockwise. First, find
the final magnetic field to needed to induce this average
current.
Then, the magnetic field (still in the -z...

1) A circle with a radius of 0.3 meters is placed in the x-y
plane in a magnetic field directed in the -z direction. It is wound
once and its resistance is 5 Ohms. The initial magnetic field is
0.4 Tesla. The magnetic field is then changed in 0.5 s and the
average induced current is 0.03 amps running counter-clockwise.
First, find the final magnetic field to needed to induce this
average current. Then, the magnetic field (still in the...

A circle with a radius of 0.3 meters is placed in the x-y plane
in a magnetic field directed in the -z direction. It is wound once
and its resistance is 6 Ohms. The initial magnetic field is 0.4
Tesla. The magnetic field is then changed in 0.5 s and the average
induced current is 0.02 amps running counter-clockwise. First, find
the final magnetic field to needed to induce this average
current.
Then, the magnetic field (still in the -z...

A.
A circle with a radius of 0.3 meters is placed in the x-y plane
in a magnetic field directed in the -z direction. It is wound once
and its resistance is 6 Ohms. The initial magnetic field is 0.7
Tesla. The magnetic field is then changed in 0.4 s and the average
induced current is 0.04 amps running counter-clockwise. First, find
the final magnetic field to needed to induce this average
current.Then, the magnetic field (still in the -z...

1) A square coil with sides of length 0.4 meters, wrapped 35
times is placed in the x-y plane a magnetic field in the +z
direction. The magnetic field changes from 0.2 T to 1 T in a time
of 0.5 seconds. If the resistance of the square coil is 9 Ohms,
what is the average induced current produced in the current in
amps? If in the clockwise direction, indicate clockwise by
including a negative sign.

A solenoid runs though the x-y plane with 3/m x 104
(turns per meter) with current that is always counter-clockwise.
Initially, the current is 5 amps for the solenoid. A square wire
with sides of 0.49 meters is wrapped 21 times and is placed in the
x-y plane within the solenoid. Due to the current changing in the
solenoid over a time of 0.30 seconds, the average induced current
creates a magnetic moment of 73.7 x 10-3 A m2 in...

A solenoid runs though the x-y plane with 3/m x 104 (turns per
meter) with current that is always counter-clockwise. Initially,
the current is 5 amps for the solenoid. A square wire with sides of
0.49 meters is wrapped 21 times and is placed in the x-y plane
within the solenoid. Due to the current changing in the solenoid
over a time of 0.30 seconds, the average induced current creates a
magnetic moment of 73.7 x 10-3 A m2 in...

2) A square coil with an initial area of 11 m2, is
wrapped once and is placed in the x-y plane a magnetic field in the
-z direction of 0.5 T. The area of the coil is changed in a time of
0.8 seconds. The resistance of the square coil is 9 Ohms, and when
the areas is changed, an induced current of 0.4 amps running
clockwise around the coil. What is the final area of the coil in
m2?

A solenoid with 7 x 104 /m (turns per meter) runs through the
x-y plane. Within the solenoid a charge of +3 coulombs with a mass
of 4 grams is initially moving at 39 m/s in the +x direction. Due
to the magnetic field created by the solenoid it orbits in a circle
of radius 0.34 meters counter-clockwise. What's the amount, in
amps, and direction of the current for the solenoid? If clockwise,
input the current as negative.

A single loop of wire of radius 12 cm lies on the x-y plane
(imaging it lying on your page of paper) and carries a current of
1.00 A in the clockwise direction . At the same time, a long
straight wire that just touches the rim at the edge of the wire
loop carries a 0.808-amp current in the +z direction ("out of the
page"). Find the magnetic field at the center of the wire loop.
Reminder: the loop...

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