Question

In the figure below, a long circular pipe with outside radius
*R* = 2.20 cm carries a (uniformly distributed) current
*i* = 13.5 mA into the page. A wire runs parallel to the
pipe at a distance of 3.00*R* from center to center. Find
the **(a)** magnitude and **(b)**
direction (into or out of the page) of the current in the wire such
that the ratio of the magnitude of the net magnetic field at point
*P* to the magnitude of the net magnetic field at the center
of the pipe is 4.73, but it has the opposite direction.

Answer #1

The figure below shows two current segments. The lower segment
carries current i1 = 0.74 A and includes a
circular arc with radius 8.0 cm, angle 180°, and center point
P. The upper segment carries current
i2 = 2i1 and includes a
circular arc with radius 4.9 cm, angle 120°, and the same center
point P. What are the (a) magnitude and
(b) direction (into or otherwise of the page) of
the net magnetic field for the indicated current
directions? What...

A long solenoid with 9.95 turns/cm and a radius of 6.45 cm
carries a current of 17.2 mA. A current of 2.55 A exists in a
straight conductor located along the central axis of the solenoid.
(a) At what radial distance from the axis in centimeters will the
direction of the resulting magnetic field be at 49.4° to the axial
direction? (b) What is the magnitude of the magnetic field
there?

A long solenoid with 14.5 turns/cm and a radius of 8.92 cm
carries a current of 16.9 mA. A current of 5.03 A exists in a
straight conductor located along the central axis of the solenoid.
(a) At what radial distance from the axis in centimeters will the
direction of the resulting magnetic field be at 35.6° to the axial
direction? (b) What is the magnitude of the magnetic field
there?

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...

A long cylindrical wire (radius = 2.0 cm) carries a current of
49 A that is uniformly distributed over the cross-section of the
wire. What is the magnitude of the magnetic field at a point which
is 1.5 cm from the axis of the wire?

The figure below shows a cross section of a long cylindrical
conductor of radius a = 4.14 cm containing a long
cylindrical hole of radius b = 1.56 cm. The central axes
of the cylinder and hole are parallel and are distance d =
2.03 cm apart; current i = 5.49 A is uniformly distributed
over the tinted area. (a) What is the magnitude of
the magnetic field at the center of the hole? (b)
What is the magnitude if...

A long solenoid (1495 turns/m) carries a current of 26 mA and
has an inside radius of 2.5cm. A long wire which is
parallel to and 3.5 cm from the axis of the solenoid carries a
current of 5.3 A. What is the magnitude of the magnetic
field at a point on the axis of the solenoid?

A long cylindrical wire (radius = 2.0 cm) carries a current of
49 A that is uniformly distributed over the cross-section of the
wire. What is the magnitude of the magnetic field at a point which
is 1.5 cm from the axis of the wire?
0.18 mT
0.44 mT
0.37 mT
0.49 mT

As shown in the figure below, two long parallel wires (1 and 2)
carry currents of I1 = 3.32 A and I2 = 4.50 A in the direction
indicated. Two parallel wires point into the page. They are a
distance d apart from each other, with the left wire labeled I_1 at
the origin and the right wire labeled I_2 a distance d along the
positive x-axis. There is a point labeled P directly above wire I_1
a distance d...

A circular loop of radius 14 cm carries a current of 15 A. A
flat coil of radius 1.2 cm, having 65 turns and a current of 1.1 A,
is concentric with the loop. The plane of the loop is perpendicular
to the plane of the coil. Assume the loop's magnetic field is
uniform across the coil. What is the magnitude of (a) the magnetic
field produced by the loop at its center and (b) the torque on the
coil...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 16 minutes ago

asked 16 minutes ago

asked 24 minutes ago

asked 30 minutes ago

asked 33 minutes ago

asked 42 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago