If you place a metal ring in a region in which a magnetic field is rapidly alternating, the ring may become hot to your touch. Why?

Q: Does a bar magnet exert a torque on itself due to its own field? Does one element of a…

A: The various parts of a bar magnet exert the force and torque on each other. But, it do not exert any…

Q: Must every magnetic configuration have a north pole and a south pole? What about the field due to a…

A: In universe magnetic monopole does not exists. Hence, for any magnetic configuration North and South…

Q: Current is induced by a stationary conductor placed in a region of the stationary magnetic field.…

A: Faraday's Law tells us that inducing a voltage into a conductor can be done by either passing it…

Q: A metal bar, pivoted at one end, oscillates freely in theabsence of a magnetic field; but in a…

A: An electric current will be induced in the conductor because of the changing flux. This current is…

Q: If the magnet were left at rest inside the coil of wire, would this cause any current to flow? * O…

A: Introduction :- Here it is given that a magnet that is at rest inside a coil of wire and we need to…

Q: A thin copper rod has a mass per unit length of 0.1 km. What is the minimum current in the rod that…

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Q: Can you produce current from a magnet and vice versa?

A: Michel Faraday’s experiments on a magnet and a loop of wire explained the relation between…

Q: Suppose you move along a wire at the same speed as the drift speed of the electrons in the wire. Do…

A: A magnetic field is generated only when the charges is moving. However electric field is generated…

Q: A piece of plastic tape coated with iron oxide is magnetized more in some parts than in others. When…

A: The Faraday’s formula of the induced emf (ε) reads, Here, ϕB is the magnetic flux.

Q: When a current flows through a wire, a magnetic field of concentric circles, perpendicular to the…

A: When the current is passed through the straight current-carrying conductor, then it creates a…

Q: 86 Show that the magnitude of the magnetic field produced at the center of a rectangular loop of…

A: In the given situation the expression for r and sinθ will be,

Q: Below you have a positive charge entering a magnetic field, in which direction will magnetic field?…

A: charge (q) = poisitive magnetic field = B , pointing into the page velocity = v , along south

Q: A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not…

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Q: A metal bar, pivoted at one end, oscillates freely in the absence of a magnetic field. But when it…

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Q: Calculate the average induced voltage between the tips of the wings of a Boeing 767 flying at 960…

A: Given: Velocity  v=960 km/hr=960×518=266.67 m/s Magnetic field B=0.45×10-4 T Length l=47.5 m

Q: A piece of aluminum is dropped vertically downward between the poles of an electromagnet. Does the…

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Q: he current passing through a straight conductor is 3A , Find the strength of magnetic field at5…

A: Given data, Value of the current = 3 A Distance from the straight conductor = 3 cm

Q: A student asserted that if a permanent magnet is dropped down a vertical copper pipe, it eventually…

A: when a bar magnet is dropped down a vertical copper pipe due to field from magnet there will be a…

Q: If you were standing directly at the earth’s north magnetic pole, in what direction would a compass…

A: Our planet is mainly divided into three layers: solid inner core, liquid outer core, and solid…

Q: A Im long conducting rod rotates with an angular frequency of 400 rad/s about an axis normal to the…

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Q: If you look directly at the North Pole end of a bar magnet , which way does it’s magnetic field…

A: Given: If you look directly at the North Pole end of a bar magnet , which way does it’s magnetic…

Q: Do the poles of a horseshoe magnet attract each other? If you bend the magnet so that the poles get…

A: One of the ends of a horse-shoe magnet is north and the other is south. Since opposite poles attract…

Q: the current in a sudden bolt of lightning is 7.72 x104 A. Calculate the magnitude of the magnetic…

A: Magnetic field: The magnetic field is the field area around a magnet in which there is magnetic…

Q: When a poles of two magnets brought close together, they attract. What type of poles are they?…

A: Required :: Type of poles.

Q: 6, Three particles travel through a region of space where the magnetic field is out of the page, as…

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Q: Charged particles are entering a parallel plate capacitor. Draw the direction of the magnetic field…

A: The necessary condition for a velocity selector is to have all three vectors perpendicular to each…

Q: Describe an example in which the magnetic flux through a surface is zero and the magnetic field is…

A: As we know magnetic mono-pole does not exist. Also, The magnetic flux is define as number of…

Q: Can a magnetic field cause a current in a coil of wire?

A: Static magnetic field do not cause current in a coil of wire. Magnetic flux linked to the coil is…

Q: . The magnetic field of a bar magnet is a. More at the equator b. Less at the poles c. More at poles…

A: The magnetic field of a bar magnetic is

Q: If you were to cut a small permanent bar magnet in half, does it mean neither piece would be…

A: When you cut a magnet in half it will can end up with two magnets. Consider a small permanent magnet…

Q: If you took a sample of magnetotactic bacteria from the northern hemisphere to the southern…

A: magnetotactic bacteria

Q: Will a magnet attract any metallic object, such as those madeof aluminum or copper? (Try it and…

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Q: A horizontal rod (oriented in the east-west direction) is moved southward at constant velocity…

A: Orientation of rod = east - west direction  Velocity of rod = south wards (-j^)  Magnetic field (B)…

Q: A wire loop in the presence of an "out-of B-field is twisted, as shown A wire loop is moved to the…

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Q: Why is it advised not to make horse shoe magnet from a flexible material?

A: The horseshoes magnets are usually made using alnico (an alloy of iron) or steel which are very hard…

Q: Can a constant magnetic field set into motion an electron initially at rest? yes no

A: Magnetic force

Q: A tangent galvanometer is set with its plane making an angle of 30° with the magnetic meridian. When…

A: The given values are, θ=30°N=2r=0.10 mH=0.32×10-4 T

Q: In what position can a current carrying loop of wire be located in a magnetic field so that it…

A: A force exerted upon placing the currant carrying conductor in an external magnetic field produces a…

Q: QI- A filamentary conductor is formed into a loop ABCD as shown in figure. If it carries a current…

A: Magnetic field due to circular coil at center B =μ0I/2R I = current R = radius of circle

Q: Is the maximum magnetic field strength doubled when exciting two coils at the same time? If not,…

A: Is the maximum magnetic field strength doubled when exciting two coils at the same time.

Q: A wire with length of 3.0 cm carries a 2.0 A in the vertical direction. The rest of the wire is…

A: Given that, Length of wire l= 3.0 cm Current I= 2.0 A  Distance x= 2 m

Q: A 550-turn solenoid is 17 cm long. The current into it is 34 A. A 3.4 cm -long straight wire cuts…

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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.