A conducting crossbar is in electrical contact with two vertical conducting wires and slides down those wires, pulled by gravity. The wires are connected with a 10 Ω resistor R to form a closed circuit as shown in the figure. The mass of the crossbar is 30 gm and its length ` between the vertical wires is 0.5 m. There is a horizontal magnetic field B = 1 Tesla perpendicular to the plane of the loop. When the crossbar is moving at a constant speed, what is the voltage across the resistor?

Q: A rod (length = 10 cm) moves on two horizontal frictionless conducting rails, as shown. The magnetic…

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Q: A solenoid of a radius R wound with n turns per unit lengthcarries a current given by I = I0e −βt,…

A: The magnetic field due to solenoid is,

Q: If a very small loop of current produces a magnetic field of strength B at a distance z away from…

A: The formula for magnetic field on a point  at distance z from the loop is  B=μ0IR22z2+R232

Q: rent-carrying rectangular wire loop with width a -0.115 m and length b- 0.205 m is in the xy-plane,…

A: We know that the formula of the magnetic  force is given as F = ILB where I is the current  L is the…

Q: When the N end of a magnet moves towards a loop of wire from the left, the wire loop experiences an…

A: The correct option is (b) .  i.e When the N end of a magnet moves towards a loop of wire from the…

Q: When the N end of a magnet moves towards a loop of wire from the left, the wire loop experiences an…

A: According to the Len'z law the induced emf in the coil under changing magnetic field is such that it…

Q: A circular loop is at rest in a uniform magnetic field B of magnitude 10.8 mT that is directed to…

A: Given that,                   Magnetic field(B) =10.8 mT                   Radius (r) = 30 mm…

Q: Assume a circular area A is enclosed by a wire loop that is under a constant magnetic field with…

A: The magnetic flux passing through a surface is given by : ϕ=BAcos θ Where B is the magnetic field A…

Q: The rectangular loop shown in the figure is pushed into the magnetic field which points inward. X X…

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Q: Starting from the magnetic field at a distance h about the axis of a circular loop of radius R…

A: we have to find magnetic field at a distance h about the axis of a circular loop of radious R in…

Q: A rectangular surface of length 3.25 cm and width 5.25 cm lies on the y-z­ plane at x = 0. What is…

A: Given data: Length of rectangular surface is, L=3.25 cm=3.25×10-2 m. Width of rectangular surface…

Q: An electron is placed inside a uniform magnetic field of magnitude 5 T.  If the electron is suddenly…

A: GivenMagnetic field (B→)=5Tvelocity of electron (V)=1 m/sDirection of electron is perpendicular to…

Q: A straight 3.0m long conducting wire with resistance, R=6.0mΩ, is bent into a single circular loop…

A: Given, Length of conducting wire (l)=3.0m Resistance of wire (R) = 6.0mΩ=0.006Ω Uniform magnetic…

Q: A neutral metal rod of length 0.25 m slides horizontally at a constant speed of 7 m/s on…

A: Solution: Net force on a mobile electron in the rod  is zero, since it is internal and the speed of…

Q: The figure shows a circular loop of radius a=2.1 cm concentric with a circular arc of radius b-3.6…

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Q: Consider a circular loop with a 2.50-cm radius in a constantmagnetic field of 0.625 T. Find the…

A: Given:              Radius = 2.50 cm or .025 m Magnetic field = 0.625 T                  Area = πr2…

Q: In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar…

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Q: A uniform magnetic field passes through a horizontal circular wire loop at an angle 15.1° from the…

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Q: A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the…

A: Velocity of ions , vi = 1.6 x 105  m/s. Magnetic field , B = 0.6 T .  Angle between ions and…

Q: A wire of length 50 cm and mass of 12 g is suspended in a horizontal plane by a pair of flexible…

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Q: A coil with a circular cross section having an area of 40cm2 has 40turns. When the coil is placed…

A: Given: A coil with a circular cross-section having an area(A)=40cm2 =40x10-6m2 Turns(N)=40 Magnetic…

Q: Show that the magnetic field at a distance r from theaxis of two circular parallel plates, produced…

A: Consider the labelled arrangement of the provided question.

Q: A proton moves perpendicular to a uniform magnetic field at a speed o experiences an acceleration of…

A: Given;-  A speed of the proton is v = 2.20 x 107 m/s The acceleration of the proton is a = 2.80 x…

Q: In the figure below, a metal bar sitting on two parallel conducting rails, connected to each other…

A: Given values: R=8Ω Here we neglect friction Secondly, we should remember uniform magnetic field is…

Q: A time-varying magnetic field has magnitude B(t)= Bo cos(wt), where Bo and w are constants, and…

A: Since magnetic field is parallel to the plane of loop, angle between magnetic field vector and area…

Q: The plane of a rectangular coil, 5.0cm by 8.0cm is perpendicular to the direction of a magnetic…

A: Given that:- Induced current in the coil =10A Total resistance=8ohm

Q: Consider that there is a charge of 3 Coulomb which has a uniform velocity of 3 ax m/s and assume…

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Q: When we move a conductor of length L in a magnetic field of strength B with a velocity V then e mf…

A: Given: The length of the conductor is L. The velocity is V. The magnetic field is B. The expression…

Q: The plane of a rectangular coil, 5.0-cm by 8.0-cm, is perpendicular to the direction of a magnetic…

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Q: A 100 turn circular coil of radius 40 cm is placed in the earth's magnetic field 0.39 G, such that…

A: Using relation of potential energy , torque and dipole moment we find

Q: A uniform magnetic field passes through a horizontal circular wire loop at an angle 17.3° from the…

A: Answer:-  Given  The angle of the magnetic field from horizontal circular wire( theta) = 17.3o  The…

Q: Earth’s magnetic field approximates that of a dipole with a field of 6×10−5 T at the North Pole.…

A: Motional induced emf = Blv

Q: A flat circular coil of wire of 40 loops must flow in as a the wire to produce a magnetic field B of…

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Q: Suppose a straight 1.00 mm diameter coper wire could float horizontally in air because of the force…

A: d=1mm B= 5×10-5 T μ = 0.01kg/m

Q: Two N-turn circular Helmholtz coils are placed parallel to one another and separated by a distance…

A: Helmholtz coil consists of two identical magnetic coils  placed parallel to each other along a…

Q: The figure shows, in cross section, four thin wires that are parallel, straight, and very long. They…

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Q: As shown in the figure, a metal bar of length l= 0.25 m is free to slide on frictionless rails. A…

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Q: In Fig. 2, an electron with an initial kinetic energy of 5.0 keV enters region 1 at time t= 0. That…

A: Given data: Points to keep in mind, When the electron enters the regions (1) and (2), it will…

Q: A proton is travelling through a bubble chamber in a direction perpendicular to the chamber's…

A: Given:Magnetic field, B=0.5TRadius, r=115μm=115×10-6mTo find:Velocity of proton, v=?

Q: A horizontal metal bar oriented east-west, is dropped straight down at a place where Earth's…

A: here,F=qV×Baccording to right hand rule, if the right hand is placed as if to grasp the wire, with…

Q: In a solenoid in vacuum of length l = 10 cm with 2052 turns per meter the current creates the field…

A: Length of solenoid l= 0.10 m number of turn N= 2052 per meter number of turns in l    = 2052  x 0.10…

Q: What is the speed of a supersonic aircraft with a 17.0 m wingspan, if it experiences a 1.80 V Hall…

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

Q: A rectangular surface of length 3.25 cm and width 5.25 cm lies on the y-z plane at x = 0. What is…

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Q: Q. # 1: A conductor of length "r" and mass “m" can slide along a pair of vertical metal guides…

A: Given Data:   The length of the conductor is l. The mass of the conductor is m. The resistance of…

Q: a circular region in which a decreasing uniform magnetic field is directed out of the page, as well…

A: Here, magnetic field is decreasing uniformly. Let it be given by Magnetic flux is given by,

Q: If the potential difference over a length of copper wire is 1.5 V, how long must the copper wire be…

A: Given- Potential difference of copper wire (V) = 1.5 v Mass of Earth (M) = 5.39 x 1024 Kg

Q: Consider a conducting loop placed on a horizontal plane in a region of uniform vertical magnetic…

A: The loop is placed in a horizontal plane. The direction of the magnetic field is in the vertically…

Q: A flat, 102 turn current-carrying loop is immersed in a uniform magnetic field. The area of the loop…

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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.