Question

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?

Answer #1

Two long parallel wires 45.6 cm apart are carrying currents of
13.0 A and 23.0 A in the same direction. What is the magnitude of
the magnetic field halfway between the wires?

Two long parallel wires which are 0.03 m apart carry equal
currents of 2.5 A. a) Calculate the net magnetic field at a point
midway between the two wires if their currents flow in the same
direction. Give magnitude and direction of Bnet. b) Calculate the
net magnetic field at a point midway between the two wires if the
currents flow in opposite direction. Give magnitude and direction
of Bnet. c) Calculate the magnitude of the magnetic force per meter...

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...

Two long parallel wires 10.0 cm apart carry currents of 3.0 A
and 2.9 A in the same direction. Is there any point between the two
wires where the magnetic field is zero?
a.
yes, 4.9 cm from the 3.0-A wire
b.
no.
c.
yes, 5.1 cm from the 2.9-A wire
d.
yes, midway between the wires
e.
yes, 5.1 cm from the 3.0-A wire

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...

Two parallel wires 20 cm apart carry currents of 5 A in the same
direction. Find the magnetic field between the wires 10 cm from one
of them and 10 cm from the other.

Consider two parallel wires placed a distance of 19.5 cm apart.
The current in the first wire is 10.5A and the current in the
second wire is 22.25A. If the currents are in opposite directions,
find the magnitude of the combined magnetic field at the midpoint
between the two wires. Calculate the answer in micro-tesla (µT) and
rounded to three significant figures

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?

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.

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.

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