A length of wire is bent into a closed loop and a magnet is plunged into it, inducing a voltage and, consequently, a current in the wire. A second length of wire, twice as long, is bent into two loops of wire, and a magnet is similarly plunged into it. Twice the voltage is induced, but the current is the same as that produced in the single loop. Why?

Q: A flat, circular coil of radius 10.00 cm consists of exactly 500 turns. A magnetic field is directed…

A: Given: Radius of circular coil r=10 cm=10×10-2m=0.1 m, Number of turns N=500, Change in magnetic…

Q: A square coil of resistance 3 Ω, 70 turns and side length 5 cm is placed with its plane making an…

A: Faraday's law states that, The induced emf in a coil is defined as the negative of the rate of…

Q: How many coils must a loop have with a cross-sectional area of 0.50m? that is pulled through a…

A: E =4V, A = 0.5m2 B = 0.25T, ∆t  = 1sec  The induced emf in the coil is  E = N.BA/∆t N = ∆t.E /BA N =…

Q: A long, straight wire carrying a current of 3.80 A moves with a constant speed v to the right. A…

A: A long, straight wire carrying a current of 3.80 A moves with a constant speed v to the right. A…

Q: An external magnetic field is parallel to the central axis of a 64.0-turn coil of radius 6.20 cm.…

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Q: You place a circular wire on a table and apply a B-field pointing straight upward out of the table.…

A: Given  Increasing magnetic field B upward and outward from the table through a wire. required…

Q: The figure attached shows a resistor that is connected in a circuit consisting of a circular loop…

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Q: A 3.0 -m bar moving through a uniform, 2.5 -T magnetic field with a speed of 2.0 m/s, oriented as…

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Q: An L = 53.0 cm wire is moving to the right at a speed of v = 7.50 m/s across two parallel wire rails…

A: Length (L) = 53 cm = 0.53 m speed (v) = 7.50 m/s Magnetic field strength (B) = 0.75 T

Q: A rectangular coil with sides 0.140 m by 0.210 m has 513 turns of wire. It is rotated about its long…

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Q: A square coil of resistance 4 Ω, 50 turns and side length 5 cm is placed with its plane making an…

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Q: X X X X X X X X X X X X X X X X From the starting position shown, a loop of copper wire is pulled to…

A: Since you have asked question with multiple sub-parts in a single request, we would be answering…

Q: A metal loop has an area of 0.100 m2 and is placed flat on the ground. There is a uniform magnetic…

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Q: An L = 51.0 cm wire is moving to the right at a speed of U = 7.50 m/s across two parallel wire rails…

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Q: 0.20 m B = 0.20 T A rigid circular loop has a radius of 0.2 m and is in the xy-plane. A clockwise…

A: Magnetic moment :μ = IS¯ = 0.75Am2 direction will be into the page. Torque = μxB = 0.75 x 0.2 = 0.15…

Q: A rigid circular loop has a radius of 0.2 m and is in the xy-plane. A clockwise current I is carried…

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Q: A rigid circular loop has a radius of 0.20 m and is in the xy-plane. A clockwise current / is…

A: Given that, Radius of the loop(r)= 0.20 m Magnetic moment of the loop(M)= 0.75 Am² External magnetic…

Q: Suppose we are given a square coil that is 3.0 cm on a side containing 100 loops of very fine wire.…

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Q: A technician wearing a circular metal band on his wrist moves his hand into a uniform magnetic field…

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Q: A wire is carrying a current I as shown in the figure. A conducting loop is perpendicular direction…

A: in first question we determine the ans by using lenz law . it is physics question.  ( i will answer…

Q: QUESTION 4 A 5.0-cm-radius conducting loop with a resistance of 4.0 Q is in the presence of a…

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Q: Here you see a single loop of stiff wire, 10.0 cm on a side, immersed in a magnetic field of 0.225…

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Q: An L = 49.0 cm wire is moving to the right at a speed of v = 7.70 m/s across two parallel wire rails…

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Q: A coil with an inductance of 2.0 H and a resistance of 10ohm is suddenly connected to an ideal…

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Q: A conductor of active length 30 cm carries a current of 100 A and lies at right angles to a magnetic…

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Q: A coil formed by wrapping 80 turns of wire in the shape of asquare is positioned in a magnetic field…

A: Given,

Q: A magnetic field passes through a loop of wire at an angle, as shown. The loop is made of a special…

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Q: A metal rod is pulled along two frictionless, conducting rails in a magnetic field. The rod and…

A: Answer               Yes, clockwise

Q: A circular coil with 65 turns and radius 18.0 cm is placed around an electromagnet that produces a…

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Q: An L = 49.0 cm wire is moving to the right at a speed of v = 7.70 m/s across two parallel wire rails…

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Q: 11.A coil of radius 0.5 m consisting of 1000 loops is placed in a 500 T magnetic field such that the…

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Q: A coil of wire consists of 20 turns each of which has an area of 0.0015 m². A magnetic field is…

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Q: A wire loop is spinning on its axis in a uniform magnetic field. Is there an emf induced in the…

A: (C) yes but only if the angular velocity of loop is constant.

Q: A 185‑turn circular coil of radius 3.79 cm and negligible resistance is immersed in a uniform…

A: Number of turns (N)=  185radius (r) = 3.79 cm resistance (R) = 14.5 ohm initial magnetic field =…

Q: 29.33     A 0.250-m-long bar moves on parallel rails that are connected through a 6.00-Ohm resistor,…

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Q: A bar slides on two frictionless rails in the plane of the page. The resistor is 6.00 Ω, and a 2.50…

A: Given information: Here, R is the resistance, B is the outward magnetic field, l and v are the…

Q: A square coil of resistance 4 Ω, 50 turns and side length 5 cm is placed with its plane making an…

A: Given, Resistance=4 Ω Number of turns=50 Length=5cm Angle=40degree Magnetic field=2T

Q: A 50 cm long metal rod moves along the two rails in a plane of the circuit shown and is placed…

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Q: A rectangular conducting loop is placed near a long wire carrying a current I as shown in the figure…

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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.