electromagnetic fields theory QUESTION 3 A rectangular loop due to an infinitely long conductor carrying current...
Problem 2 (Current through Loop) A rectangular loop of dimensions / and w moves with a constant velocity v away from an infinitely long straight wire carrying a current I in the plane of the loop, as shown in Figure 10.9.6. Let the total resistance of the loop be R. What is the current in the loop at the instant the near side is a distance r from the wire? Figure 10.9.6 A rectangular loop moving away from a current-carrying wire
An infinitely long conductor carrying current is bent at a right angle as shown in Figure 1. Point Pis located a distance b from the corner of the wire. Only one section of this current contributes to the magnetic field at pt. P. Why? The general formula (derived from the Biot-Savart Law) for the magnitude of the magnetic field a distance a away from a thin, straight conductor is: B = f (sin 8, - sin 02) For this problem,...
The rectangular loop shown is coplanar with the long, straight wire carrying the current 20 A. (a) Determine the magnetic flux through the loop. (b) If a current I was flowing in the clockwise direction in rectangle would there be a force and/or torque acting on the rectangle?
In the figure, a rectangular loop of wire with length a = 3.8 cm, width b = 2.2 cm, and resistance R = 0.70 mΩ is placed near an infinitely long wire carrying current I = 4.7 A. The loop is then moved away from the wire at a constant speed v = 3.9 mm/s, when the center of the loop is at distance r = 7.9 cm, what are (a) the magnitude of the magnetic flux through the loop...
2. Briefly discuss the Biot Savart Law and give its mathematical expression. (5 Marks) a. b. An infinitely long straight conductor is present in a magnetic field B. The conductor carrying a current of I = 10 A, is placed in a sheath (M- 202 ). At what distance from the conductor will the magnetic field be 1T/m? Find the magnetic moment of a square loop of 500 turns in a field of uniform flux density 2.5mT. The loop carries...
Problem 2 (Current through Loop) A rectangular loop of dimensions 1 and w moves with a constant velocity v away from an infinitely long straight wire carrying a current I in the plane of the loop, as shown in Figure 10.9.6. Let the total resistance of the loop be R. What is the current in the loop at the instant the near side is a distance r from the wire? Figure 10.9.6 A rectangular loop moving away from a current-carrying...
4. (a) A long straight wire carrying a current is placed near
a current-carrying rectangular loop. Describe how, and why, the
loop would move as a result of the magnetic forces from the long
wire. The current in the loop is counterclockwise.
(b) Suppose that you were to put in a different
loop below the long wire (and still in the plane of the page).
Draw the shape of a loop that would...
...experience a total magnetic force of zero...
4. A long straight wire carrying a current is in the plane of a circular loop of wire. The current is decreasing. Both the loop and the wire are held in place by external forces. The loop has a resistance of 24. -Long wire Conducting loop a) In what direction does the induced current in the loop flow? Mint: first find the external magnetic field at the loop due to the long wire, figure out if the flux through the...
18. A infinitely long cable consists of a solid cylindrical inner conductor of radius a, surrounded by a concentric cylindrical conducting shell of inner radius b and outer radius c. The inner conductor has a non-uniform current density (r) = ar in the z direction shown. a is a positive constant with units A-m'. The outer conductor has a uniform current density: Jr) = -B (in negative z). B has the same unit as a. The conductors carry equal and...
Q.3 Consider an infinitely long coaxial structure shown in the figure below. Inner conductor has a radius a and outer conducting shell has a radius b. Thickness of the outer conductor is ignored as it is very small. Between two conductors, there is a magnetic material with permeability () = Mo a Assume that the current I is distributed uniformly over the cross-section of the inner conductor whereas it flows on the surface of the outer conductor. a) Find the...