Question

Two long, parallel wires separated by 2.80 cm carry currents in opposite directions. The current in one wire is 1.30 A, and the current in the other is 3.35 A.

(a) Find the magnitude of the force per unit length that one
wire exerts on the other.

(b) Is the force attractive or repulsive?

attractiverepulsive

Answer #1

Two long, parallel wires are separated by a distance of 2.80 cm
. The force per unit length that each wire exerts on the other is
3.40×10−5 N/m , and the wires repel each other. The
current in one wire is 0.520 A .
a) What is the current in the second wire?

a) Two long, parallel wires are separated by a distance 3.00 cm
and are repelling each other with a force per unit length of
2.00×10−5 Nm−1 . If a current of 0.600 A is
flowing along one wire, what is the current in the other wire? Are
the currents flowing in the same directions or in opposite
directions?
b) Two long, parallel wires are hanging by regularly spaced,
4.00 cm long cords from a common axis. The wires have a...

Two long straight parallel wires of length L
carry currents of
I1
and
I2
in opposite directions. The force between them is
a)
attractive
b)
repulsive
c)zero
d) inversly proportional to L
?

Two
parallel wires, 5mm apart, carry currents of 100 A and 140 A
respectively, in opposite directions. The force per unit length in
N/m of one wire on the other is:

Two long straight wires are parallel and carry current in
opposite directions. The currents in the wires are 8.0 A for the
left wire upward and 12 A for the right wire downward. The wires
are separated by 0.40 cm.
A. The magnetic field due the left wire in mT (milli-tesla) at a
point midway between the wires is:
B. The direction of the magnetic field of the left wire carrying
8.0 A at a point midway between the wires...

Wires carrying current can attract or repel each other. two
wires are parallel but carry current in opposite directions.
I1 = 5 A,
I2 = 8 A
Distance between wires = 30 cm
Find the force per unit length on either wire
A.) 3.4 x 10^-5 N attractive
B.) 2.7 x 10^-5 N repulsive
C.) 2.7 x 10^-5 N attractive
D.) 7.2 x 10^-5 N repulsive
E.) 7.2 x 10^-5 N attractive

Two parallel wires are separated by 7.00 cm, each carrying 2.65
A of current in the same direction.
(a) What is the magnitude of the force per unit length between
the wires?
(b) Is the force attractive or repulsive?

Consider two very long conducting parallel wires carry currents
in opposite directions such that one is triple of the other. The
distance between wires is 30 cm. The magnetic field at points on a
line between the wires, and at a distance of 5 cm from the wire
carrying the smaller current, is 2.5×10-5 T. a) Draw a diagram of
the situation. Assume the wires are placed in the x-direction. Draw
the direction of the magnetic field at points on...

Two long straight wires are parallel and 8.4 cm apart. They are
to carry equal currents such that the magnetic field at a point
halfway between them has magnitude 240 µT. (a) Should the currents
be in the same or opposite directions? (b) How much current is
needed?

Two long parallel wires separated by 1.2 cm experience a force
per unit length of 0.5 N/m. One wire carries a current of 137 A.
What current does the other wire carry?

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