The earth’s magnetic field points toward(magnetic) north. For simplicity, assume that the field has no vertical component (as is the case nearthe earth’s equator). How should you hold it to get zero emf as you walk toward the east? (i) East-west; (ii) north-south; (iii) up-down; (iv) none of these.

Q: As shown in the figure, a uniform conducting rod of length 0.35 m and mass 0.075 kg is in rotational…

A: Given:-       Length of the rod l=0.35m       Mass of the rod m=0.075 kg       magnetic…

Q: A wire of length 0.50m passes over a square magnetic field (0.75m per side) at a speed of 10m/s. The…

A: length of wire (L) = 0.50 m square over which the magnetic field is present = 0.75 m per side speed…

Q: A very tong hollow cylindrical coil with across- Sectional area of 7ocm and the number oe turns Per…

A: Energy stored in a coil = (1/2) LI2  L = self inductance I = instantaneous current

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 2.00 - m length of wire is held in an east–west direction andmoves horizontally to the north with…

A: Formula to calculate the induced emf between the ends of wire is,

Q: Doubling the radius of a circular current-carrying wire, the magnetic field at the center of the…

A: The condition of the radius is given as R2=2R1

Q: The earth’s magnetic field points toward(magnetic) north. For simplicity, assume that the field has…

A: The magnetic field of Earth always points towards the North. This is the reason that the magnetic…

Q: Suppose you wish to produce a 2-T magnetic field in a toroid with an iron core for which magnetic…

A: The mean radius of the toroid r=18 cm=0.18 m The number of turns n=400 turns The magnetic field in a…

Q: what is the magnitude of the torque and magnetic potential energy acting on wire about an axis on…

A:

Q: Calculate the magnetic field at a point b = 8 cm from one end of a solenoid consisting of 120 turns…

A: number of turns (N) = 120 Lo = 12 cm radius (a) = 4 cm distance of observation point (b) from one…

Q: O Question 20 Which modification to a solenoid would be most likely to decrease the strength of its…

A: magnetic field due to solenoid is given by B B = μrμ0 n I where   μr = relative permeability of…

Q: Find the flux of Earth’s magnetic field of magnitude 5.00 × 10−5 T through a square loop of area…

A:

Q: How much current must pass through a horizontal power transmission cable in order for the magnetic…

A:

Q: A loop of wire rotates in a uniform, constant magnetic field. Which of the following terms of does…

A: A loop is rotating in a constant magnetic field let the magnetic flux be ϕB magnetic flux is the the…

Q: When does the axis of the magnetic needle of the tangent galvanometer point randomly (a) When the…

A: Tangent Galvanometer measures small currents (dc) as its magnetic needle is acted upon by two forces…

Q: A bar of mass 0.2 kg that can slide without friction on a pair of rails separated by a distance,l=…

A: Given that,  mass = 0.200 kg       l = 1.20 , θ = 25°  , R = 1Ω  and  B=0.500 TWe know that,…

Q: A current of 10.9A is maintained in a single circular loop having a circumference of 80cm. An…

A: Given: The electric current is 10.9 A. The circumference of the loop is 80 cm = 0.8 m…

Q: An airplane travelling at 278 m/s upward at an angle of 30 o to the horizontal is in a region where…

A:

Q: A coil carrying electric current is placed in uniform magnetic field with the angle 0. Then a.…

A: When a current carrying coil is placed in a uniform magnetic field, then magnetic moment is…

Q: A 1.50 m length of wire is held in an east-west direction and moves horizontally to the north with a…

A: Given data: Length = 1.5 m Velocity (v) = 14.5 m/s Magnetic field (B) = 40 μT Need to determine the…

Q: Near San Francisco, where the vertically downward component of the earth's magnetic field is 4.0 x…

A: The magnetic field,

Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 17.2 mA is…

A: Given: Current inside solenoid i = 17.2 mA Turns N = 960 Turns per meter length.

Q: A circular loop of wire with a radius of 15.0 cm and oriented in the horizontal xy-plane is located…

A: The average emf induced by the change in magnetic flux in a circular loop of wire is given as ε =…

Q: It is desired to construct a solenoid that will have a resistanceof 5.00 Ω (at 20°C) and produce a…

A: a)The length of the solenoid is,

Q: If the distance from a current carrying wire doubles, the magnetic fi?eld produced by it a.…

A: IN THE QUESTION IT IS GIVEN THAT A CONDUCTOR IS CARRYING CURRENT (I) FROM THE APPLICATION OF…

Q: The wingspan of a metal aeroplane is 36 m. If the aeroplane is flying at 400 km/h, determine yhe emf…

A:

Q: A 100-tum square coil of side 20.0 cm rotates about a vertical axis at 1.8 x10 rev/min as indicated…

A: Given, Number of turns N = 100 Side of coil L = 20 cm = 0.2 m Angular speed = 1.8 x 103 rev/ min =…

Q: The figure below shows a bar of mass m - 0.240 kg that can slide without friction on a pair of rails…

A:

Q: A 32-cm-long solenoid, 1.8 cm in diameter, is to produce a0.050-T magnetic field at its center. If…

A: Given, Length of the solenoid, L= 32 cm=0.32 m, Magnetic Field, B=0.05 T, Current, I= 6.4 A, and…

Q: Does increasing the magnitude of a uniform magnetic field through which a charge is traveling…

A:

Q: A bar magnet falling inside a vertical metal tube reaches aterminal velocity even if the tube is…

A: A changing magnetic flux induces loops of electric current in a conductor known as the eddy current.…

Q: Suppose you wish to produce a 1.2-T magnetic field in a toroid with an iron core for which χ = 4.0 ×…

A:

Q: A wire with a weight per unit length of 0.080 N/m is suspendeddirectly above a second wire. The top…

A:

Q: When the polarity of the voltage applied to a dc motor is reversed, the direction of motion does not…

A: Introduction: The DC motor is an electrical device that converts electrical energy into mechanical…

Q: At a certain place, Earth’s magnetic field has magnitude B = 0.590 gauss and is inclined downward at…

A:

Q: A galvanometer has a rectangular coil 10 by 30 mm on a side that rotates about the center of the…

A:

Q: At the equator, near the surface of Earth, the magnetic field is approximately 65.0 ?T northward and…

A: Given, Magnetic field of earth (B) = 65 µT ( northward) Electric field (E)= 300N/C(downward)…

Q: A 0.200-kg metal rod carrying a current of 10.0 A glides on two horizontal rails 0.500 m apart. What…

A:

Q: The figure shows three situations in which identical circular conducting loops are in uniform…

A: Given data: A figure showing three situations in which uniform magnetic fields that are either…

Q: A proton is located on the Earth's magnetic equator at an altitude of 1.0 km. In which direction…

A: The proton is deflected in the direction of the Lorentz force Thus, the proton is deflected in a…

Q: A long solenoid is wound with 960 turns per meter of thin wire through which a current of 19.7 mA is…

A: A solenoid can be termed to be an electrical device that will act as an electromagnet when current…

Q: The figure shows a bar of mass 0.2kg that can slide without friction on a pair of rails separated by…

A: Given: Mass m = 0.2 kg Distance l =1.20 m Resistance R =1 Ω Angle θ =25° Magnetic field H=0.5 T

Q: A 0.230 m radius, 480 turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having…

A:

Q: cted vertically upward with a speed of 1.70x10^6 m/s into a uniform magnetic field of 0.350T that is…

A: Givenve=1.7×106 mB=0.35 T

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: X X X X X X B x X X X X X хххх хх X X X X X X хххх хх

A: Given: Magnitude of earth magnetic field (B) = 0.5 G = 0.5×10-4 T. Diameter of bar (d) = 5.0 mm.…

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.