You place a magnetic compass on a horizontal surface, allow the needle to settle, and then give the compass a gentle wiggle to cause the needle to oscillate about its equilibrium position. The oscillation frequency is 0.312 Hz. Earth’s magnetic field at the location of the compass has a horizontal component of 18.0 mT. The needle has a magnetic moment of 0.680 mJ/T. What is the needle’s rotational inertia about its (vertical) axis of rotation?

Q: The coil in the figure carries current i = 2.35 A in the direction indicated, is parallel to an xz…

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Q: The coil in the figure carries current i = 2.48 A in the direction indicated, is parallel to an xz…

A: Current, i = 2.48 A Turns, n = 5 Area, A = 5.47×10-3 m² Field, B = (1.55î - 2.44ĵ  - 4.65k̂)×10-3 T…

Q: what is its mass?

A: Cyclotron Motion When a charged particle enters a magnetic field, the Lorentz force acts on the…

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

Q: The coil in the figure carries current i = 2.01 A in the direction indicated, is parallel to an xz…

A: a)Write the expression for the magnetic dipole moment and substitute the corresponding values.

Q: x (cm) В. (Т) 9.9 x10-5 A circular loop of wire of radius 10 cm is oriented in the yz plane with the…

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Q: A magnetic field B = 3.22 i - 1.31 j + 2.97 k, (B in T) is applied on the circular loop, radius of…

A: (a) the torque on the loop (b) the magnetic potential of the loop (c) the magnitude of the force the…

Q: A permanent magnet has a magnetic dipole moment of 0.190 A m². The magnet is in the presence of an…

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Q: A permanent magnet has a magnetic dipole moment of 0.110 A · m2. The magnet is in the presence of an…

A: Given data:  Magnetic dipole moment (M) = 0.110 A.m2 Magnetic field (B) = 0.0800 T Angle (θ) = 16.0°

Q: B y A rectangular coil has 13 turns and sides of length a = 25 cm and c = 20 cm. The coil is pivoted…

A: GIven, Number of turns, N=13 Length, a=25cmc=20cm θ=28° Magnetic field, B=0.5i^ T Current, I=7A a.…

Q: Current of 3.8 A flows in the coil as shown in the figure. The coil has 4 loops and is situated in…

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Q: A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d…

A: Given values, Mass of rod(m)= 0.720Kg  Radius(r) = 6.0cm Length (l) = 45.0cm Current in rod (i) =…

Q: (a) What current through the coil results in a magnetic dipole moment of 3.5 A m²? 1= A (b) What is…

A: When a coil carries current it acts like magnetic dipole. When this dipole is placed in uniform…

Q: A rectangular coil with resistance R=6.00 Ω has N=240 turns, each of length and width w=7.00 cm, as…

A: Given :           Resistance of the coil, R = 6 Ω           Number of turns, N = 240 turns…

Q: The magnetic moment of a rectangular loop that carries 6.04 A and has dimensions 0.0465 m × 0.0757 m…

A: Number of turns in the rectangular loop are 569 . Explanation:Step 1:For a closed current loop,…

Q: A compass needle points 23° E of N outdoors. However, when it is placed 11.0 cm to the east of a…

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Q: Using a coil made of 117 turns of single‑strand copper wire, you use a motor to rotate the coil at a…

A: Angular velocity w = 80 rev/sec w = 502.66 rad/s Maximum emf V = 4.15 V Area of coil = πr2 A =…

Q: A very long solenoid of inner radius 3.25 cm creates an oscillating magnetic field B of the form B =…

A: Given Inner radius (r) = 3.25 cm  = 0.0325 m Bmax               = 0.00725 T ω                     =…

Q: A permanent magnet has a magnetic dipole moment of 0.170 A m². The magnet is in the presence of an…

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Q: The coill in the figure carries current i-156 A in the direction indicated, is parallel to an xz…

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Q: A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d…

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Q: A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d…

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Q: The coil in the figure carries current i- 1.81 A in the direction indicated, is parallel to an xz…

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Q: People have proposed driving motors with the earth's magnetic field. This is possible in principle,…

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Q: A bar magnet of length 10 cm and magnetic moment 0.8 Am² is placed in a uniform magnetic field of…

A: Length of bar magnet, L = 10 cmMagnetic moment, M = 0.8 Am2Uniform magnetic field strength, B = 0.5…

Q: A small circular coil consisting of 19 turns of wire lies in a uniform magnetic field whose…

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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.