The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.00 A. The radius of cross-section A1 is r1 = 0.480 cm. An illustration shows a horizontal cylindrical conductor of nonuniform diameter such that the radius of the left face of the cylinder, r1, is less than the radius of the right face of the cylinder, r2. Similarly the area A1 of the left face of the cylinder is less than the area of the right face of the cylinder, A2. The current is shown to flow rightward and horizontal, as represented by the arrow I. (a) What is the magnitude of the current density across A1?   A/m2 The radius r2 at A2 is larger than the radius r1 at A1. (b) Is the current at A2 larger, smaller, or the same? The current is larger.The current is smaller.    The current is the same. (c) Is the current density at A2 larger, smaller, or the same? The current density is larger.The current density is smaller.    The current density is the same. Assume A2 = 5A1. (d) Specify the radius at A2.   (e) Specify the current at A2.   (f) Specify the current density at A2

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: An electron is moving at a constant speed of 1m/s on a circle of radius 3.2m. Part (a) Express the…

A: Given that:- Radius of circle=R=3.2m

Q: Each of the eight conductors in the figure carries 2.58 A of current into or out of the page. Two…

A:

Q: ) Express the magnitude of the force between the wires per unit length, f, in terms of I1, I2, and…

A:

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The…

A: Given variable: Current density, J = 6br2  The radius of the conductor - R

Q: The current density is a vector whose magnitude J is the current 1 per unit cross-sectional area A.…

A: I = 3.6 mA  A= 7.2 × 10-6 m2

Q: In the diagram shown below, the four currents are assumed to be held in place at their current…

A: The magnetic field acting at point P1 is shown in the diagram below: The magnetic field due to…

Q: R2 R3 lo R1 An image taken from the cross-sectional area of a coaxial cable consisting of a…

A: The magnetic fields at the two given points, will be the result of the net magnetic fields produced…

Q: If a wire of radius a = 9.0 mm has got non-uniform current density J = Jo (1- (r/a)) where r is…

A:

Q: A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The…

A: Given: The radius of the cylindrical conductor is R and current flowing in the cylindrical conductor…

Q: A hollow conductive cylinder of internal radius a and external radius b carries a current l along…

A: This is a very simple appliation of Amperes law. We here used cylindrical coordinates to calculate…

Q: Mathematically, the current density in a conductor is given as: The answer cannot be found on the…

A: The current density in a conductor is given as the ratio of the total current traveling per unit…

Q: 3. How much current flows through a squa

A: In z direction, the current density is given as, J→ x=Co +C1 xk^Here,Co=4.7Am2,C1=-3.1Am2,L=0.9m.

Q: An infinite non-uniform cylindrical conductor is made up of different materials that causes the…

A:

Q: An electric current in a conductor varies with time according to the expression I(t) = 84 sin…

A:

Q: (a) What is the magnitude of the current density across A₁? A/m² The radius ₂ at A₂ is larger than…

A: Disclaimer: Since you have posted a question with multiple sub-parts, we will solve first three sub…

Q: 400 sin e A/m2. (a) Find the total current flowing through that r2 +4 Let J = portion of the…

A: To determine: The total current flowing in the portion of the spherical surface

Q: an iron wire with cross-section 2,5 * 10-6 m2 carries current 106 A. Find the drift velocity Vd , in…

A: Given: for iron wire area of cross section is A= 2.5*10^-6 and Current I= 106 A . Also two carrier…

Q: An electric current in a conductor varies with time according to the expression I(t) = 90 sin…

A:

Q: The normal vector from region 2 to region 1 is ân21=(6âx+2ây-3âz)/7. If H1=10âx+ây+12âz A/m and…

A: Given: ân21=(6âx+2ây-3âz)/7;  H1=10âx+ây+12âz A/m   H2=H2x âx-5ây+4âz

Q: Problem 9: An electric current is flowing through a long cylindrical conductor with radius a = 0.35…

A: Hey, since there are multiple subparts posted, we will answer first three subparts.(a)The current…

Q: Consider a coaxial cable as shown in the figure. The cable consists of a solid inner conductor of…

A: Given, r1= 0.2 cm= 0.2×10-2mr2= 0.8 cm= 0.8×10-2 mr3= 1.7 cm= 1.7×10-2mI= 1Aj1=c1rr= 1.5 cm=…

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: Each of the eight conductors in the figure carries 7.62 A of current into or out of the page. Two…

A:

Q: A (3.45x10^2)-mA current is used to charge up a parallel plate capacitor. A large square piece of…

A: Given data :  Current I = 3.45 × 102 mA  By using ampere's law,we can solve given problem easily.

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A: (a) B = u0*I1/(2pi*a) = (4pi*10^-7*1.14)/(2pi*1*10^-3) = 228*10^-6 T = 228 uT upward

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A: Given:-            Current in the inner conductor (I1) = 1.2 A            Current in the outer…

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: Problem 4: An electron is moving at a constant speed of 3 m/s on a circle of radius 3.7 m. Part (a)…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Given: R = 4.2 N R2 = 8.4 N R3 = 7.7 N Using Kirchhoff's laws, and utilizing the direction in the…

A:

Q: Figure is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber…

A:

Q: The magnitude J(r) of the current density in a certain cylindrical wire is given as a function of…

A: Current density of a cylindrical wire, J(r) = BrMagnetic field field, B = 2.2*105 A/m3Radius of…

Q: Each of the eight conductors in the figure carries 3.41 A of current into or out of the page. Two…

A: The problem is related to Ampere’s Law in magnetism, which states that the magnetic field B around a…

Q: An iron wire with cross-section 3.2 x 10 m2 carries current 167 A. Find the drift velocity Va, in…

A:

Q: Consider a coaxial cable as shown in the figure. The cable consists of a solid inner conductor of…

A: Write the expression for the magnetic field. Here, μo represents the permeability of free space, I…

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A: Given data :  Current passing through centred conductor I1 = 1.18 A  Current passing through outer…

Q: The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by…

A:

Q: a wire of radius R carries uniform current denisty J. what is the total current in the wire 1.2…

A: Current density J is the measure of current per unit area. a)   For uniform current density, J=Total…

Q: 1) Adapting an old exam question: Consider a hollow cylindrical conductor of inner radius b and…

A: Given, current density is, J inner radius of hollow cylinder is, b outer radius of hollow cylinder…

Q: The figure shows a cross section of three parallel wires each carrying a current of 12.2 A. The…

A: Given Current (I)    = 12.2 A Distance (R) = 5.0 mm = 0.005 m Length (L)    = 4 m

Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.