People have proposed driving motors with the earth’s magnetic field. This is possible in principle, but the small field means that unrealistically large currents are needed to produce noticeable torques. Suppose a 20-cm-diameter loop of wire is oriented for maximum torque in the earth’s field. What current would it need to carry in order to experience a very modest 1.0 x 10-3 N • m torque?

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Q: (provided by current-carrying coils) with a magnitude of 0.0800 T, which makes an angle of 25.0°…

A: Given : Magnetic dipole moment 'm'= 0.140 A.m2 Magnitude 'B'= 0.0800 T angle 'θ' - 25.00

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A: speed, v = 6.6 x 103 m/s  Magnetic field, B = 1.7 x 10-4 T  length, L= 2.5 km

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Q: Why is it inadvisable to make a horseshoe magnet from a flexible material?

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A: given M=0.14 A-m2 B=0.08 T θ=21

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Q: A permanent magnet has a magnetic dipole moment of 0.130 A m. The magnet is in the presence of an…

A: Given data The magnetic dipole moment is given as m = 0.130 A.m2. The magnetic field is given as B…

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A: Given that, m = 1 , L = 1 , B = 1 T, R = 1 ohm By torque balance on rod about center point, Fb*(L/2)…

Q: A flat circular coil of wire with diameter of 8.52 cm has 39 turns and carries a current of 3.72 mA.…

A: Determine the cross-sectional area of the wire.

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Q: A uniform magnetic field exerts a torque on each of the current-carrying single loops of wire as…

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Q: X X X ©Rutgers Phy X X X os & Astronomy 4.00 L = 0.60 m In the arrangement shown, a conducting bar…

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Q: What should be the length of an ideal solenoid consisting of 1250 turns for the magnetic field in…

A: The coils that are able to produce magnetic field which is uniform like from a bar magnet , due to…

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Q: How fast would a metalic airplane with a 25 m wingspan have to fly through the vertical 5.6 x 10 T…

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Q: A flat circular coil of wire with diameter of 5.00 cm has 10 turns and carries a current of 1.25 mA.…

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Q: Consider a rectangular loop with dimensions 20.00cm x 35.00cm is placed in a region with uniform…

A: Dimensions of the loop (20*35) cm so area A=20*35=700 cm2=0.7 m2, Magnetic field B→=1.2i^ (T) and…

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A: Given data, Current in the loop = 2 A Radius of the loop = 20 cm

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A: Given,

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Q: The figure shows four arrangements in which long parallel wires carry equal currents directly into…

A: Given:

Q: A very long solenoid with a circular cross section and radius r= 8.10 cm with n= 1.00E+4 turns/m has…

A: radius (r) = 0.081 m number of turns per unit length = 10000 turns per meter Magnetic energy density…

Q: A magnetic field exerts a torque on each of the current carrying single loops of wire shown in the…

A: When a loop of wire is placed in the uniform magnetic field B, the torque is produced which tend to…

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Q: A conducting bar moves along frictionless conducting rails connected to a 4.00-0 resistor as shown…

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Q: A permanent magnet has a magnetic dipole moment of 0.130 A • m2. The magnet is in the presence of an…

A: (a) The magnitude of the torque on the permanent magnet is calculated by using the given expression…

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Q: A circular current loop (with only one turn) has a radius of 4.82 cm and a current of 0.416 A runs…

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Q: A toroid has 500 turns and carriesa 2-A current. If the inner and outer radii of the toroid are 0.8…

A: The given data are: Here, N denotes the turns, I denotes the current, and r denotes the distance.

Q: A conducting bar of length moves to the right on two frictionless rails, as shown in the figure…

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Q: A 232 turn circular coil of radius 50 cm is placed in the earth's magnetic field 0.53 G, such that…

A: Magnetic moment of the coil is, M = N*I*A Where, N is the number of turns, I is the current flowing…

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A: Given, Hall Voltage (E)=1.80V Length (L)=17m Magnetic field (B)=8.70×10^-5 tesla Speed=?

Q: A 136 turn circular coil of diameter 52 cm is placed in the earth's magnetic field 0.42 G, such that…

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Q: A square current loop of side a=0.4m lies in the x-y plane as shown in the figure. If the loop…

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Q: A 148 turn circular coil of radius 54 cm is placed in the earth's magnetic field 0.4 G, such that…

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Q: A 304 tum ciraular coil of radius 32 am is placed in the earth's magnetic field 0.35 G. such that…

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Q: The rod shown in the accompanying figure is moving through a uniform magnetic field of strength B =…

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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.