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: An eight-turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of…

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Q: A single circular loop of radius 0.20 m carries a current of 3.3 A in a magnetic field of 0.92 T.…

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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: A metal rod with a length of 26.0 cm lies in the xy -plane and makes an angle of 37.7 with the…

A: Given that L=0.26 m v=6.8 m/s along + x axes. Angle of rod with positive x axes is 37.7°

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 conducting bar of length L=80 cm is rotated on a conducting circular platform as shown in the…

A: Given: A conducting bar of length L=80 cm resistor 50 kΩ capacitor 40 uF  outward uniform magnetic…

Q: Suppose that the magnetic dipole moment of Earth is 6.5 x 1026 J/T. (a) If the origin of this…

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Q: How much energy is stored in a cylindrical solenoid of length 0.469 m0.469 m and radius 0.0539…

A: L = 0.469 mr = 0.0539 mB = 1.61 TU = ?

Q: The figure shows a slidewire generator with d= 78 cm and R = 0.37 Q. A 0.937-N force is required to…

A: Here we will find the magnitude of the magnetic field.

Q: John is pedaling his bike down the street perpendicular to the earth’s magnetic field of 5.5 x 10-5…

A: Given: Area, A=1.13 m2 Magnetic field, B= 5.5×10-5 T Calculate the flux through the metal rim of…

Q: If the tube length is 1.00+0.05m, the magnet takes 2.5±0.1 s to fall through the tube. What is the…

A: Given that:- Length of tube=(1.0+-0.05)m  Time=(2.5+-0.1)sec

Q: A patient having an MRI scan has neglected to remove a copper bracelet. The bracelet is 6.0 cm in…

A: emf=dϕdt=AdBdt=πr21-.4t=π×36×10-41-.44×1.2=1.413×10-3volt

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: The kinetic energy of the rod is

Q: In the figure, a rectangular loop of wire with length a = 3.1 cm, width b = 2.0 cm, and resistance R…

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Q: A solenoid produces a B = 9.13 mT magnetic field when a current of I = 1.71 A runs through it. How…

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Q: A conducting bar of length L=80 cm is rotated on a conducting circular platform as shown in the…

A: The emf ε induced in any loop is given by the relation: ε=-dϕdt where ϕ is the flux through the…

Q: In the figure, a rectangular loop of wire with length a = 2.8 cm, width b = 1.5 cm, and resistance R…

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Q: An eight - turn coilencloses an elliptical area havinga major axis of 40.0 cmand a minor axis of…

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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: A 3.00 N metal bar 1.50 m long with a resistance of 10.0 ohms rests on conducting wires in the…

A: Solution:-Given thatWeight of metal bar (W)=3 Nlenght of the bar (l)=1.5 mResistance of the bar…

Q: Solenoid #1 has a length L, cross-sectional area A, and N turns. Solenoid #2 has a length 2 L,…

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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 cube of edge length ℓ = 2.20 cm is positioned as shown in the figure below. A uniform magnetic…

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Q: A point charge Q moves on the x-axis in the positive direction with a speed of 211 m/s. A point P is…

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Q: A straight wire aligned with the z axis carries an alternating current I=I_cos (2лft). In this case,…

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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 6m long horizontal rod carries a current and is mounted on a balance. Where the rod is located,…

A: Given in question: Length of rod(L) = 6m                                  Magnetic field (B) = 1.87T…

Q: Chapter 28, Problem 061 The coil in the figure carries current i 2.30 A in the direction indicated,…

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Q: A voice coil of a speaker has a diameter of d= 0.025m, contains 55 turns of wire, and is placed in a…

A: Given  Diameter d=0.025m radius r=0.025/2=0.0125m No of turns N=55 Magnetic field B=0.10T I=2A Mass…

Q: What is the strength of the magnetic field produced at the center of the solenoid of length 24 cm…

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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: A solenoid is 3.0 cm long and has a radius of 0.50 cm. It is wrapped with 500 turns of wire carrying…

A: given length l = 0.03 m radius r = 0.005 m number of turns N = 500 current i = 2 A from the relation…

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 metal rod with a length of 20.0 cm lies in the xy-plane and makes an angle of 35.7 with the…

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Q: A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque…

A: A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque…

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: e induced emf

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Q: A cylindrical bar magnet of radius 1.00 cm and length 10.0 cm has a magnetic dipole moment of…

A: The magnetic dipole moment of the bar magnet is given by

Q: A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (as shown) that are d = 12.0…

A: Unit Conversion: 1 m = 100 cm. Given: A rod of mass 0.720 kg and radius 6.00 cm rests on two…

Q: A toroid with N turns carries a current I. The toroid is made of a paramagnetic material with…

A: Here ,total no. Of turns of toroid = N  Radius of toroid = r

Q: A conducting bar of length L=80 cm is rotated on a conducting circular platform as shown in the…

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Q: B 1.7 x 10-27 kg and a charge 3.0 x 10° m/s in the direction illustrated by a red arrow in the…

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Q: A current of 30.0 mA is maintained in a single circular loop of 3.0o0 m circumference. A magnetic…

A: The given data are: I=30 mA=0.03 A2πr=3 mr=0.4775 mB=0.85 T Here, I, r, and B represent the current,…

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.