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: The figure(Figure 1) shows a zero-resistance rod sliding to the right on two zero-resistance rails…

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Q: A flat circular loop of radius 0.560 m is rotating in a uniform magnetic field of 5.31 T. Find the…

A: Given           Magnitude of magnitic flux (B) = 5.31 T          Radius of the circular loop ( r) =…

Q: A metal rod with a length of 27.0 cm lies in the ry-plane and makes an angle of 33.6° with the…

A: Given:length of the rod, L = 27.0 cm = 0.27 mangle between rod and x axis, θ = 33.6ovelocity of rod,…

Q: A circular metal disk of radius R rotates with angular velocity ω about an axis through its center…

A: Given variable : radius of disc - R angular velocity - ω magnetic field -  B  To determine : emf…

Q: A bar of length 1.0 m slides along metal rails at a speed of 2 m/s. The bar and rails are in a…

A: Given, A bar of length, l=1.0 m  speed, v= 2 m/s magnetic field, B= 10 T resistance of these two…

Q: A metal bar of length 1.0m, mass 25kg, and resistance 4.0Ω is free to slide on metal rails of…

A: When terminal speed is achieved, net force on moving rod is zero. i.e Fnet=0     FB=mg

Q: A solenoid of 69 turns and area 20 cm2 has its ends connected together though a resistance of 5…

A: Given value--- No. of turns = 69. Area = 20 cm2.  Resistance = 5 Ohm. Magnetic field = 3 × 10-2 T.…

Q: A moveable (massless and frictionless) bar with a length of L = 18/50 m is being moved at a constant…

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Q: One hundred turns of (insulated) copper wire are wrapped around a wooden cylindrical core of…

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Q: A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a…

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Q: A circular copper disk of radius 7.5 cm rotates at 2400 rpm around the axis through its center and…

A: Given data: The radius of circular copper disk is: R = 7.5 cm = 0.075 m The rotation is: n = 2400…

Q: A coil in a magnetic field encloses a flux of 0.0266 T·m2 when the angle between the normal to the…

A: Given- Flux ϕ= 0.0266 T·m2  The angle between the normal to the coil and the direction of the…

Q: The loop, having rotated by 45°, rotates clockwise another 30°, so that the normal to the plane…

A: Let there be a presence of magnetic field B Let area of loop = AMagnetic flux is given by formula=…

Q: In the figure, a metal rod is forced to move with constant velocity along two parallel metal rails,…

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Q: A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a…

A: Given Data: Let us consider the given data, The radius of the semicircle is r=0.16m. The magnetic…

Q: A movable metal bar is in contact with opposite sides of a square ”C”- shaped wire as shown to the…

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Q: A circular loop of radius 0.10 m is rotating in a uniform external magnetic field of 0.20 T. Find…

A: Given data The circular loop’s radius is r = 0.10 m. The external magnetic field is B = 0.20 T. a)…

Q: Two straight conducting rails form a right angle as shown in the figure. A conducting bar with the…

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Q: In the figure, a conducting rod of length L= 25.0 cm moves in a magnetic field B → of magnitude…

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Q: A strip of metal (made from copper, with 8.47 x 1028 charge carriers/m3) is placed in a uniform…

A: The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical…

Q: We move a square loop of wire 2.6 cm on a side into a region of uniform magnetic field of 1.5 T with…

A: It is given that,

Q: The plane of a flat, circular loop of wire is horizontal. An external magnetic field is directed…

A: Given  Magnetic field is increasing  Induced  current is flowing in clockwise sense.  According to…

Q: A loop of a wire has the shape shown in the drawing. The top part of the wire is bent into a…

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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.