The earth's magnetic field, with a magnetic dipole moment of 8.0 × 1022 A m2 , is generated by currents within the molten iron of the earth's outer core. Suppose we model the core current as a 3000-km-diameter current loop made from a 1000-km-diameter "wire." The loop diameter is measured from the centers of this very fat wire.

Q: 1. A large spool in an electrician's workshop has 75 m of insulation coated wire coiled around it.…

A: Given That-The initial length of coated wire Initial Current through the wire  Final Current through…

Q: A long wire with a radius of 0.400 cm carries a current. The porential difference across a 3.60 m…

A: Given data:  Radius (r) = 0.400 cm = 0.400×10-2 m Length (L) = 3.60 m Potential difference (V) =…

Q: In an integrated circuit, the current density in a 2.3-um-thick x 75-um-wide gold film is 7.0x105…

A:

Q: copper wire carries a current of 8.12 mA a. Find the number of electrons that flow past a given…

A:

Q: The figure below represents a section of a circular conductor of nonuniform diameter carrying a…

A:

Q: In a wire with a 2.01 mm² cross-sectional area, 8.49 × 1020 electrons flow past any point during…

A: Each electron carries a certain amount of charge. So to solve the problem, we will first find…

Q: Discuss the effects of a large current through the human body on:

A: The effect of large current through the human body on (a) Breathing Breathing will be dangerously…

Q: A copper wire has a diameter of 2.222 mm. What magnitude current flows when the drift velocity is…

A:

Q: You are given a wire of length I and cross-section area A. You put a potential difference of V…

A:

Q: Two copper wires, one 1.40 times the diameter of the other, have the same current flowing through…

A:

Q: A charge of Q = 1.1 C passes through a wire every t = 1.5 s. a.Input an expression for the current,…

A: Given Data: The magnitude of a charge is, Q=1.1 C The time required is, t=1.5 s   Part (a): The…

Q: Figure shows the current-versus-potential-difference graph for a resistor.a. What is the resistance…

A:

Q: A current of 4.50 A flows in a conductor for 7.50 s. How many electrons pass a given point in the…

A: Given that:-Current, I=4.50 ATime, t=7.50 secWe know that:-The current is rate of flow of charge,…

Q: 1 Switch S shown in Figure P28.71 has been closed for a long time, and the electric circuit carries…

A: (a) Since the switch S is closed for a long time, the capacitors C1 and C2 are completely charged.…

Q: Consider a wire made of copper with conductivity 6.0 × 107 Ω-1m-1, which has a circular…

A:

Q: 4. A long coaxial cable, crossection of which is shown in the figure, is made up of a cylindrical…

A: According to our guidelines We’ll answer the first 3 subparts of the question since the exact one…

Q: While taking photographs in Death Valley on a day when the temperature is 54.0°C, Bill Hiker finds…

A:

Q: An aluminum wire 1.291 mm in diameter (16-gauge) carries a current of 3 amps. Overall Hint a. What…

A: The diameter of the Aluminium wire, d=1.291 mm The current flowing through the wire, i=3 A

Q: A current from a 12 V battery passes through a 10.0 m long, 0.25 mm diameter copper wire. a. What is…

A:

Q: A 0.870-mm-diameter silver wire carries a 30.0 mA current.

A: Given data: The diameter of the wire d=0.870 mm=0.870×10-3 m The current I=30.0 mA=30.0×10-3  m

Q: A 20 m long copper wire has electron density n = 8.50 x 1028 m-3 and cross-sectional area A = 4.00 x…

A: Length, L = 20 m Electron density, n = 8.50×1028 /m³ Area, A = 4×10-6 m² Current, I = 6 A

Q: A 50-A current is running through a cylindrical wire that has a cross-sectional area of 4.0 mm2. The…

A:

Q: A lightbulb is connected to a battery by two copper wires of equal lengths but different…

A:

Q: e figure below represents a section of a circular conductor of nonuniform diameter carrying a…

A:

Q: R, R, - 1.0 0 R,- 1.0 2 R, 1.0 2 R, = 1.0 2 R, R,= 2.0 2 E,- 2.0 V e, = 4.0 V ww E, = 4.0 V R…

A:

Q: The current in a wire varies with time according to the relation I = 55 A - (0.65 A/s²)t². For…

A: Given Data :Current as a function of time I(t) = 55 A - (0.65 A/s2)t2Current is given asI =…

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.