1.one long wire carries a current of 30A along the entire x-axis. A second long
ID: 1988947 • Letter: 1
Question
1.one long wire carries a current of 30A along the entire x-axis. A second long wire carries a current of 40A perpendicular to the xy plane and passes through the point(0,4,0)m. what is the magnitude in µT of the resulting magnetic field at the point y=2m on the y-axis?2.two long parallel wires each carry a current of 5A directed to the east. the two wires are separated by 8cm. what is the magnitude of the magnetic field in µT at a point that is 5cm from each of the wires?
3.two long straight wires carry currents perpendicular to the xy plane. both currents are directed up out of the plane. one carries a current of 50 A and passes through the point x=5cm of the x-axis. the second wire has a current of 80a and passes through the point y=4cm on the y-axis. what is the magnitude in µT of the resulting magnetic field at the origin?
4.A charged particle moving perpendicular to a constant magnetic field experiences a force that is ____________ to its velocity.
a.perpendicular
b.parallel
c.antiparallel
d.colinear
e.proporional
5.an electron enters a region with a constant magnetic field while moving in a direction parallel to the magnetic field. what is its path?
a. A straight line
b.A circle
c.an ellipse
d.a parabola
e.a hyperbola
6.constant current I is present in a wire located in a region where a uniform magnetic field exists the wire is parallel to the field direction. the magnetic force on the wire is
a.zero
b.parallel to the current
c.antiparallel to the current.
d.perpendicular to the current.
e.parallel to the magnetic field.
7.A square loop with sides 12cm long is located in a constant magnetic field of magnitude 2.2T. the loop mounted on an axis through the centers of two sides, has a current of 5.0A in it. it is released when the plane of the loop makes an angle of 30º with the magnetic field. the magnitude of the torque on the loo in Nm is __?
8.a long straight cylindrical wire of 0.05cm radius carrying a 2A current is surrounded b a concentric cylinrical shell of 0.5cm thickness and inner radius 1cm carrying a 2.0A currnet in the opposite direction. the magnitude of the magnetic field in µT 0.4m from the center of the cylindricla wire is __?
9.a sire is replaced by another of half its diameter. by what factor does this change its resistance?
10. by what factor is the drift velocity in a conductor changed if the boltage is doubled?
Explanation / Answer
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