Question

Could you draw pictures and explain each answe is correct ( the correct answer is given for each I just need the explaination)

1. A loop of wire lays flat on a horizontal surface in an area with uniform magnetic field directed vertically down. Magnetic field suddenly grows stronger. While magnetic field is changing, the induced current in the loop as viewed from above is (:correct answer is Counterclockwise )

2. A wire with a constant in time current I is carrying current to North. A conducting loop of wire is moving towards the wire starting from some point to the west. Induced current in this loop is:( correct answer is clockwise)

3. Uniform magnetic field in has a form of a circle R (think about inside of a solenoid) and is directed out of page. Magnetic field is decreasing in magnitude. Electric field at the distance 2R from the center of a circle is directed (correct answer is Counterclockwise)

4. In previous question, electric field is maximum in magnitude at (: correct answer is R from the center )

Answer #1

Indicate the direction of the induced current in the loop, given
that a magnetic field directed ‘away’ from the page (perpendicular
and along the center axis of the loop) is gaining strength.
(a) Direction will clockwise or counterclockwise.
with diagram of wire loop

A circular wire loop 39 cm in diameter has resistance 120 Ω and
lies in a horizontal plane. A uniform magnetic field points
vertically downward, and in 25 ms it increases linearly from 5.0 mT
to 55 mT.
Find the magnetic flux through the loop at the beginning. (
Φ1 =
? mWb
)
Find the magnetic flux through the loop at the end of the 25-ms
period. Φ2 = ? mWb
What's the loop current during this time?
Express...

1. Which describes the vector calculation of the Biot-Savart
law?
a. The length element in the direction of the
current is crossed into a vector directed from that element toward
the point of measurement.
b. The length element in the direction of the current
is dotted into a vector directed from that element toward the point
of measurement.
c. The magnetic field vector is crossed into a vector
directed from a current-length element toward the point of...

1. In Ampere’s law, when we integrate the magnetic field along a
loop, which are summing?
a. the field components that are parallel to the
path elements, at every point along the loop
b. the field components that are perpendicular to the
path elements, at every point along the loop
c. the magnitudes of the field vectors at every point
along the loop
2. Which describes the magnetic field at a point inside a long
wire that...

1. In Ampere’s law, when we integrate the magnetic field along a
loop, which are summing?
a. the field components that are parallel to the
path elements, at every point along the loop
b. the field components that are perpendicular to the
path elements, at every point along the loop
c. the magnitudes of the field vectors at every point
along the loop
2. Which describes the magnetic field at a point inside a long
wire that...

A loop of wire lies on the table. The north end of a magnet is
moved toward the loop from above. a) Draw a diagram of the
situation. b) In which direction is the induced magnetic field?
Explain your answer. i) Up ii) Down c) As viewed from above, in
which direction is the induced current? Explain your answer. i)
Counter-clockwise ii) Clockwise

A loop of wire sits in a uniform magnetic field, everywhere
pointing toward you. Due to a changing magnetic flux through the
loop, an induced current flows in the wire, clockwise as shown. The
area of the loop is J. 1.63 m2 , and the magnetic field initially
has magnitude K. 0.61 T.
(a) Suppose that, over a time period of L. 1.47 s, the magnetic
field changes from its initial value, producing an average induced
voltage of M. 8.7...

A uniform magnetic field is given by B?
=btk^, where b = 0.33 T/s .
1. Find the current in a conducting loop with area 300 cm2 and
resistance 0.65 ? that lies in the x-y plane.
2. In what direction is the current, as viewed from the positive
z axis?
clockwise
counterclockwise

A long, thin solenoid has 700 turns per meter and radius
2.50 cm. The current in the solenoid is increasing at a uniform
rate of 39.0 A/s .
Part A
What is the magnitude of the induced electric field at a point
near the center of the solenoid?
Express your answer with the appropriate units.
Part B
What is the magnitude of the induced electric field at a point
0.500 cm from the axis of the solenoid?
Express your answer...

1. Is the magnetic pole of the Earth nearest the geographic
North Pole a magnetic north or a magnetic south pole?
2. A current in a solenoid coil creates a magnetic field inside
that coil. The field strength is directly proportional to:
a. the coil area
b. the current.
c. Both A and B are valid choices.
d. None of the above choices are valid.
3. A double loop of wire (making 2 turns) is in the xy-plane
centered at...

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