A rectangular silver bar, with a cross-sectional area of 10mm x 15mm and unknown length l , has a current of 80A flowing through it and is immersed in a magnetic field. Determine the minimum magnetic flux density that would be needed for the resulting magnetic force exerted on the bar to overcome the effects of gravity.

Q: A straight current-carrying wire produces a magnetic field around it. If the current in the wire is…

A: Current (I) = 5Apermeability of free space = Distance from the wire (r) = 0.02m

Q: A lightning bolt may carry a current of 1.00 x 104 A for a short period of time. What is the…

A:

Q: A 100-m-long wire carrying a current of 10.0 A (to the negative y -vertical direction) will be…

A:

Q: Find the magnitude of the magnetic field at the center of a 69 turn69 turn circular coil with radius…

A: We have to find the magnitude of the magnetic field at the center of a 69 turn(N) turn circular coil…

Q: The diagram shows a rectangular bar of a metal which has a current of 5.0 A through it. The bar is…

A:

Q: A 150 m long horizontal cable carries a current of 5,300 A, the Earth's magnetic field in that area…

A: Write the given values with the suitable variables. L=150 mI=5300 AB=53 μT=53×10-6 Tθ=70° Here, L,…

Q: A coil that has length 30 cm, radius 1.2 cm, and 300 turns carries a current of 2.6 mA. Find the…

A: The given values are,

Q: Calculate the magnetic field strength needed on a 300-turn square loop 25.0 cm on a side to create a…

A: Torque on a loop can be found using τ = NIABsinθ Where, The loop carries a current I, has N turns,…

Q: Part (a)  Express the magnitude of the magnetic field at point O in terms of I and R. |B| = ______…

A:

Q: Find the current through a loop needed to create a maximum torque of 9.0 N·m. The loop has 50 square…

A:

Q: A bar slides to the right at a constant speed of 2.1 m/s on two frictionless rails. The resistance…

A: Speed of the bar v = 2.1 m/s Resistance of the resistor R = 5.2 Ω Magnetic field B = 2.0 T ℓ = 1.2 m

Q: 5. 9. Find the size and direction of the force per meter exerted on the bottom wire by the top 4.…

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Q: A single-turn wire loop is 2.0 cm in diameter and carries a 650-mA current. Find the magnetic field…

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Q: A wire carrying a 31A current passes between the poles of a strong magnet perpendicular to its field…

A: Current (I) = 31 A Magnetic force (F) = 2.12 N length of wire (L) = 4 cm = 0.04 m Angle (θ) = 90o

Q: The magnetic field in the center of the Helmholtz coils is given by the equation, 840NI B = R(5)3/2…

A:

Q: Calculate the force acting on a 12.5 cm piece of wire that is carrying a 12.0 A current in a uniform…

A: Given  length(L)=0.125 m current(I)=12 A magnetic field(B)=0.45 T angle(θ)=45o

Q: Consider a mass spectrometer used to separate the two isotopes hydrogen and deuterium. The isotope…

A:

Q: A current of 4.0 A is maintained in a circular loop with radius 24.7 cm that consists of 50 turns of…

A: Given that,Current in the circular loop : i = 4 (A)Radius : R = 24.7 (m)Magnetic field : B = 2…

Q: A solenoid that is 98.5 cm long has a cross-sectional area of 15.2 cm². There are 1270 turns of wire…

A:

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.