Question

The wire in the drawing carries a current of 17 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 22 A. Use Ampere's law to find the magnitude of the magnetic field at a distance of r = 0.80 m from the wires when the currents are (a) in the same direction and (b) in opposite directions.

Answer #1

Two long, straight, parallel wires carry current. The first wire
carries I1 = 3 A to the right and the second carries I2 = 5 A to
the left. The force per length each wire exerts on the other is of
magnitude 5 × 10−6 N/m.
(a) Sketch the situation. On your sketch indicate the directions
of the magnetic fields produced by each wire and the direction of
the force exerted on each wire. Determine the distance between the
wires....

The magnetic field 35.0 cm away from a long, straight wire
carrying current 5.00 A is 2860 µT.
(a) At what distance is it 286 µT?
?? cm
(b) At one instant, the two conductors in a long household
extension cord carry equal 5.00-A currents in opposite directions.
The two wires are 3.00 mm apart. Find the magnetic field 35.0 cm
away from the middle of the straight cord, in the plane of the two
wires. How far is the...

The magnetic field 36.0 cm away from a long, straight wire
carrying current 3.00 A is 1670 µT.
(a) At what distance is it 167 µT?
360 cm
(b) At one instant, the two conductors in a long household
extension cord carry equal 3.00-A currents in opposite directions.
The two wires are 3.00 mm apart. Find the magnetic field 36.0 cm
away from the middle of the straight cord, in the plane of the two
wires.
nT
(c) At what...

A) Determine the magnitude of the magnetic field midway between
two long straight wires 2.50 cm apart when one wire carries 4.40 A
and the other carries 12.6 A. Assume these currents are in the same
direction. B) Determine the magnitude of the magnetic field when
these currents are in opposite directions.

A long straight wire X carries 3 A current horizontally to the
right. Another long straight wire Y, which is 20 cm below wire X,
carries 2 A current also horizontally to the right. (a) Calculate
the magnitude of the magnetic field midway between the two wires.
(b) Calculate the magnitude of the magnetic field at a point 10 cm
below wire Y.

Two parallel long, straight wires are separated by 3.00 cm. One
of them carries a current of 2.00 A. The magnetic field at a point
halfway between the two wires has magnitude 5.00×10^(−5)T. What is
the current in the second wire if its direction is the same as in
the first wire?
What is the current in the second wire if its direction is
opposite to that in the first wire?
Express your answer with the appropriate units.

Two parallel long, straight wires are separated by 3.00 cmcm.
One of them carries a current of 2.00 AA. The magnetic field at a
point halfway between the two wires has magnitude
5.00×10−5T5.00×10−5T. What is the current in the second wire if its
direction is the same as in the first wire?
What is the current in the second wire if its direction is
opposite to that in the first wire?
Express your answer with the appropriate units.

Two long wires perpendicular to each other carry currents. One
wire carries a current of 6.5A in the positive ? direction and
other wire curries 10.4A current in the negative ? direction. Find
the magnitude of the net magnetic field these wire produced at
point A(4.0c?, −6. ???) and point B(-6m, 4??) .

Two parallel long, straight wires are separated by 3.50 cm . One
of them carries a current of 2.00 A. The magnetic field at a point
halfway between the two wires has magnitude 6.00×10−5T .
a)What is the current in the second wire if its direction is the
same as in the first wire?
b)What is the current in the second wire if its direction is
opposite to that in the first wire?

Two long, parallel wires are separated by 2.6 mm. Each wire has
a 32-AA current, but the currents are in opposite directions.
a. Determine the magnitude of the net magnetic field midway
between the wires.
b. Determine the magnitude of the net magnetic field at a point
1.3 mm to the side of one wire and 3.9 mm from the other wire. The
point is in the same plane as the wires.

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