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An electric current I flows through the wire in the direction indicated. • Determine for each...
39. As an electric current flows through a wire, a. a magnetic field is generated that...
39. As an electric current flows through a wire, a. a magnetic field is generated that is inversely related to the current. b. magnetic field lines form around the wire that reverse direction when the current is reversed. c. the lines of magnetic force created closest to the wire are the weakest. d. magnetic lines of force are formed around the wire in the same direction regardless of the direction of the current.
How much current flows through the bottom wire in the figure ? In which direction current...
How much current flows through the bottom wire in the figure
?
In which direction current flows through
thebottom wire in the figure? Explain
to the right
to the left
An decreasing current I flows in an elliptical loop of wire. Two loops of wire are...
An decreasing current I flows in an elliptical loop of wire. Two
loops of wire are placed as shown. Why is the flow of induced
current counterclockwise for loop 1? I thought that mutually
induced emf equals (-)M(di/dt). Doesn't the negative sign mean that
the mutually induced emf (and hence the induced current) will be in
the opposite direction of the rate of change of current? So why
wouldn't the induced current for loop 1 be clockwise?
ALSO: what is...
4. Determine the direction of the induced current in the wire loops concentric with the current...
4. Determine the direction of the induced current in the wire loops concentric with the current carrying loop. Show the direction of the B-field created by the current carrying wire. (4 pts) a. Current in the inner loop is decreasing. b. Current in the outer loop is increasing
An electromagnet is a helical winding of wire through which an electric current flows. Such a...
An electromagnet is a helical winding of wire through which an electric current flows. Such a "solenoid" of 1000 tums is 10 cm long and is passed through by a current of 2A. What is the field strength in Oe and A/m?
b inside a current carrying wire A steady current I flows through a wire of radius...
b inside a current carrying wire
A steady current I flows through a wire of radius a. The current density in a wire varies with ras ) = kr2, where k is a constant and r is the distance from the axis of the wire. Find expressions for the magnitudes of the magnetic field inside and outside the wire as a function of r. (Hint: Find the current through an Ampèrian loop of radius r using thru /j. dA. Use...
A straight wire lies along the y-axis. It is initially carrying a current of 10 A...
A straight wire lies along the y-axis. It is initially carrying a current of 10 A in the positive y-direction. This current decreases to zero, then reverses to flow at 10 A in the negative y-direction. In the 1st quadrant a square conducting coil has 2 sides parallel to the y-axis and the other 2 sides parallel to the x-axis. As the current in the straight wire is in the process of changing, in which direction is the induced current...
Need help with all 3 questions on Magnetostatics. 1) Two wires are parallel to each other....
Need help with all 3 questions on Magnetostatics. 1) Two wires are parallel to each other. They will be attracted to each other if: A) One wire carries a current in the negative direction and the other carries no current B) One wire carries a current in the positive direction and the other carries no current C) They carry equal currents but in the opposite direction D)They carry currents in the same direction, which do not need to be of...
An infinitely long, thin wire has a known current of 2i, which flows in the negative...
An infinitely long, thin wire has a known current of 2i, which flows in the negative x-direction. It is surrounded by an infinitely long, hollow cylindrical wire so the wires have a common axis. The hollow wire has inner radius A and outer radius B. A known current i, which is uniformly spread over the hollow wire, flows in the positive x-direction in the hollow cylindrical wire. Cross-Section View A 2i i 0 +x 2 Z B +x What is...
A current I flows through a loop of wire. The loop has a radius of 3a....
A current I flows through a loop of wire. The loop has a radius of 3a. Determine the magnetic field at the center of the loop. Group of answer choices
39. As an electric current flows through a wire, a. a magnetic field is generated that is inversely related to the current. b. magnetic field lines form around the wire that reverse direction when the current is reversed. c. the lines of magnetic force created closest to the wire are the weakest. d. magnetic lines of force are formed around the wire in the same direction regardless of the direction of the current.
How much current flows through the bottom wire in the figure
?
In which direction current flows through
thebottom wire in the figure? Explain
to the right
to the left
An decreasing current I flows in an elliptical loop of wire. Two
loops of wire are placed as shown. Why is the flow of induced
current counterclockwise for loop 1? I thought that mutually
induced emf equals (-)M(di/dt). Doesn't the negative sign mean that
the mutually induced emf (and hence the induced current) will be in
the opposite direction of the rate of change of current? So why
wouldn't the induced current for loop 1 be clockwise?
ALSO: what is...
4. Determine the direction of the induced current in the wire loops concentric with the current carrying loop. Show the direction of the B-field created by the current carrying wire. (4 pts) a. Current in the inner loop is decreasing. b. Current in the outer loop is increasing
An electromagnet is a helical winding of wire through which an electric current flows. Such a "solenoid" of 1000 tums is 10 cm long and is passed through by a current of 2A. What is the field strength in Oe and A/m?
b inside a current carrying wire
A steady current I flows through a wire of radius a. The current density in a wire varies with ras ) = kr2, where k is a constant and r is the distance from the axis of the wire. Find expressions for the magnitudes of the magnetic field inside and outside the wire as a function of r. (Hint: Find the current through an Ampèrian loop of radius r using thru /j. dA. Use...
An infinitely long, thin wire has a known current of 2i, which flows in the negative x-direction. It is surrounded by an infinitely long, hollow cylindrical wire so the wires have a common axis. The hollow wire has inner radius A and outer radius B. A known current i, which is uniformly spread over the hollow wire, flows in the positive x-direction in the hollow cylindrical wire. Cross-Section View A 2i i 0 +x 2 Z B +x What is...
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