Why is the following situation impossible? Imagine a copper wire with radius 1.00 mm encircling the Earth at its magnetic equator, where the field direction is horizontal. A power supply delivers 100 MW to the wire to maintain a current in it, in a direction such that the magnetic force from the Earth’s magnetic field is upward. Due to this force, the wire is levitated immediately above the ground.

Q: A 2.0 m wire carries a current of 15 A directed along the positive x-axis in a region where the…

A: Length , L = 2.0 m Current , I = 15 A Magnetic field , B = x 10-3 T To find = Resulting magnetic…

Q: A conducing wire carries a current of 3.0 A in a region where a uniform magnetic field has a…

A: Given  Current in the wire = I = 3.0 A  Magnetic field =B = 0.6 T  Force on the wire = F = 9.0 N…

Q: A horizontal rod 0.200 m long is mounted on a balance and carries a current. At the location of the…

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Q: A straight,vertical wire carries a current of 1.20 A downward n aregion between the poles of a large…

A: The magnetic force on the wire can be given by

Q: The velocity selector of a mass spectrometer has an electric field of 34000 V/m and a magnetic field…

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Q: Two parallel wires carry currents in opposite directions. Current I1 = 6 A is at the origin and…

A: Given, Two parallel wires carry currents in opposite directions.Current, I1 = 6 A (at origin and…

Q: Figure shows a portion of a silver ribbon with z1 = 11.8 mm and y =0.23 mm, carrying a current of…

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Q: A long, rigid wire lying along the y-axis carries 12.3A current, flowing in the positive…

A: Given that, Current, I = 12.3 A along positive y-direction Magnetic field, B = 14.2 T along positive…

Q: Two long, parallel conductors separated by 20.0 cm, carry currents in opposite direction, given by I…

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Q: Suppose a positive charge with a magnitude of 10 nC is isolated in the laboratory. If it is given a…

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Q: The figure below shows a magnetic field of magnitude 500 Gs that extends horizontally from west to…

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Q: A nearly horizontal dc power line in the midlatitudes of North America carries a current of 1000 A…

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Q: A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying…

A: The above problem belongs to the topic of magnetism. It involves the concept of magnetic force due…

Q: A proton moves perpendicular to a uniform magnetic field  at a speed of 2.40  107 m/s and…

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Q: In an electric motor, a coil with 112 turns of radius 2.40 cm can rotate between the poles of a…

A: As per guidelines we are suppose to do only one question from multiple questions and three subpart…

Q: the poles of a la... A straight,vertical wire carries a current of 1.20 A downward in a region…

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Q: A 54.5-turn circular coil of radius 4.70 cm can be oriented in any direction in a uniform magnetic…

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Q: An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of…

A: When a charged particle enters a magnetic field, the magnetic field exerts a force on this particle,…

Q: A straight,vertical wire carries a current of 1.20 A downward in a region between the poles of a…

A: The magnetic force on a current carrying conductor placed in the magnetic field is  F = I L B sin A…

Q: At the instant an electron enters a uniform magnetic field of 0.500 T directed along the positive…

A: The centripetal force needed for the circular motion of the electron is supplied by the magnetic…

Q: A proton moves perpendicular to a uniform magnetic field B at a speed of 1.00 × 10^7m/s and…

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Q: A proton moves perpendicular to a uniform magnetic field B→ at a speed of 1.00 x 107 m/s and…

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Q: The magnetic field near the surface of a neutron star has a magnitude of 1.00 x 108 T. Find the…

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Q: At a particular instant, an electron is located at point (P) in a region of space with a uniform…

A: Write the given values of this problem: B=7.76 mTElectron's velocity=2×105 m/sMass of…

Q: The magnitude of the force on a magnetic dipole μ→ aligned with a nonuniform magnetic field in the…

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Q: A charge Q =138 nC moves with a speed of 225 km/s along the +y-axis. It enters a region where there…

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Q: A long, straight wire lies on a horizontal table and carries a current of 2.60 µA. In a vacuum, a…

A: Given Current in the wire is i=2.6 μA=2.6×10-6 A Speed of the proton is v=2.70×104 m/s Distance of…

Q: west to east in a region between the poles of two bar magnets. In this region there is a horizontal…

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Q: An electron traveling due North with speed 4 x 20 m/s enters a region where the earth's magnetic…

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Q: As shown in the figure below, when a charged particle enters a region of magnetic field traveling in…

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Q: A straight,vertical wire carries a current of 1.20 A downward in a region between the poles of a…

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Q: A long straight wire carries a current of 40 A in a region where a uniform external magnetic field…

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Q: 1. Proton moves with a speed of 2 × 107 m/s along the x axis. If a magnetic field was applied with…

A: Given: The speed of the proton is 2x107 m/s. The strength of the magnetic field is 1.5 T. The angle…

Q: What is the magnitude and direction of the force on a proton 9 Mm/s traveling horizontally to the…

A: We know           F= q( v x B)       < angle b/w v and B is 900 >  Back lines are…

Q: A proton moves perpendicular to a uniform magneticfield B→at a speed of 1.00 x 107 m/s and undergoes…

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Q: A straight wire is aligned east-west in a region where Earth’s magnetic field has magnitude 0.0580…

A: B = 0.0580 mT = 0.0580*10-3 Tθ = 70.9°F/L=0.0300 N/m

Q: A wire 2.80 m in length carries a current of 3.00 A in a region where a uniform magnetic field has a…

A: Q5. Given that  Length of the wire L = 2.80 m Current passing through the wire i = 3.00 A Magnitude…

Q: At a site where the Earth's magnetic field has a magnitude of 0.47 gauss (where 1 gauss = 1.00 x…

A: Solution , Given, Magnetic field = 0.47 gauss = 0.47 x 10-4 T Length of high voltage power line =…

Q: A wire having a linear mass density of 1.00 g/cm is placed on a horizontal surface that has a…

A: Given Data: The mass density is, md = 1 g/cm. The coefficient of kinetic friction is, μ=0.20. The…

Q: A long straight wire carries a current of 40 A in a region where a uniform external magnetic field…

A: Magnetic field external = 30x 10^-6 T d= 3.5 cm or 0.035 m

Q: Suppose a straight 1.75 mmmm -diameter copper wire could just "float" horizontally in the air…

A: Given, d=1.75mmB=4.5×10-5 Tρ=Density of copper=8940 kg/m3A=π4d2=2.4053 mm2L=Length of wireI=Current…

Q: A particle (q = −4.0 μC, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a…

A: The magnitude of the magnetic force F on a charge q moving at a speed v in a magnetic field of…

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.