. (a) Explain why the resistance of a conductor increases with temperature. (b) Explain briefly the dissimilarities between Biot-Savart's law for the calculation of magnetic field and Coulomb’s law for the calculation of electric field.

Q: A conductor 120 cm long and carrying a current of 10 A, lies at right angle to a magnetic field of…

A: Force on current carrying conductor is given by :F = i(l→×B→)or F = ilBsinθ  -(eq1) here i = current…

Q: Which of the following statements in NOT TRUE about Lenz’s Law?     a. The induced current in a…

A:

Q: 1. Which of the following is true about Ampere’s discovery. A. Magnetic repulsion exists between two…

A: Amperes law gives the direction and the magnetic field produced, when current is passed through…

Q: When a current passes through a conductor in downward direction, then O a. The conductor tries to…

A: Current passes in Downward direction

Q: Which of the following does not explain why the magnetic flux on a closed surface equal to zero? 2…

A: Magnetic flux is defined as the amount of magnetic field passing through a given area and it can be…

Q: In 5 seconds, a 120-ohm generator experiences a change of magnetic flux from 95 Webers to 175…

A: Given that, The resistance of the generator, R = 120 ohm Initial magnetic flux, ϕi=95 Wb Final…

Q: A magnetic field has a magnitude of 0.0015 T, and an electric field has a magnitude of 6.4 × 103…

A: According to the equation, the net magnetic force is Fmagnetic=qvBsinθ  where q is the magnitude of…

Q: A typical current in a lightning bolt is 10^4 A. Estimate the magnetic field 1 m from the bolt.

A: Given that,⇒                  current in a lightning bolt(I) =104 A⇒                 distance from…

Q: Faraday's law of electromagnetic induction indicates that an induced EMF may be generated in a loop…

A:

Q: If 51.0 cm of copper wire (diameter - 0.829 mm, resistivity =1.69 x 10 0-m) is formed into a…

A:

Q: A bar of iron is said to be saturated once most of its magnectic molecular are aligned whereby…

A: 1) FALSE , saturation is the state where increasing the magnetomotive force stops affecting the…

Q: 1. A magnetic material has a magnetization of 1591 x10³ A/m, find the flux density and the relative…

A: Note: As per the guidelines, we can only answer a single question. Sorry for the inconvenience. For…

Q: indicated that a magnetic field of magnitude 1.30 x 10-3 T, oscillating at 60 Hz, might stimulate…

A: Given:- The magnetic field of the magnitude B = 1.30 x 10-3 T  The frequency f= 60 Hz  The diameter…

Q: coil used to produce a magnetic field for an electron-beam experiment has a radius of 12 cm and has…

A: Write the given values with the suitable variables. r=12 cm=0.12 mN=200B=5×10-3 T Here, r is the…

Q: A conducting rod is positioned between two poles of a large magnet, with 11 cm of the rod within the…

A: Given data :- Length L = 11 cm = 0.11 m Magnetic field B = 0.085 T Magnetic force Fm = 9.2×10-3 N…

Q: A coil of wire with an average length of 20 cm moves through a magnetic field.  The flux is cut with…

A:

Q: What happens to the flow of current when the south pole of a magnet is moving towards a coil of wire…

A: What happens to the flow of current when the south pole of a magnet is moving towards a coil of wire…

Q: Match the following laws with their correct descriptions. : Ampère's law. Gauss's law in…

A:

Q: 1. The relationship between electricity and magnetism can be seen in all of the following EXCEPT:…

A: As per guidelines, question 1 is answered. For the remaining questions to be answered, post them…

Q: he magnetic field intensity in a piece of ferromagnetic material is 104A/m. If the magnetic…

A:

Q: 10. Which of the following is NOT true about induced electric field? A. It is caused by the changing…

A: Its force is not conservative since it depends on path.

Q: The drawing shows a type of flow meter that can be used to measure the speed of blood in situations…

A: Given Velocity of the blood   = 0.35 m/s Diameter of the vessel = 7.6 mm Magnetic field…

Q: A person who works with large magnets sometimes places her head inside a strong field. She reports…

A:

Q: A 1 m wire carries a current of 20 A. The wire experiences a force of 6.0 N in the presence of a…

A:

Q: Why should an infrared photograph of a person look different from a photograph taken using visible…

A: A photograph taken using visible light captures visible light reflected from the person’s body.

Q: A magnetic field has a magnitude of 0.0011 T, and an electric field has a magnitude of 6.4 × 103…

A:

Q: The 10-cm-wide, zero-resistance slide wire shown in (Figure 1) is pushed toward the 3.5 N resistor…

A: Given: The length of the wire is 10 cm. The resistance of the circuit is 3.5 Ohm. The speed of the…

Q: For a magnetic field to create an electric current in a circuit, it is necessary that: a. the…

A: Current is delivered in a conductor when it is traveled through an attractive field on the grounds…

Q: Which physicist first received credit for the discovery of electromagnetic induction?   a.…

A: Charles-Augustin de Coulomb is known for electrostatic forces and Coulomb's law. Michael Faraday is…

Q: A proton moves across a magnetic field in a circular path of radius 20 cm. If the flux density of…

A: Given: radius r =20 cm =0.20 mmagnetic field B =0.30 Tparticle : protoncharge q = 1.6*10-19 Cmass m…

Q: A straight, stiff, horizontal wire of length 20cm and mass 30g is connected to a source of emf by…

A: Length of wire (L) = 20 cm = 0.2 m Mass (m) of the wire = 30 g = 0.03 kg Magnetic field (B) = 1.33 T…

Q: A generator has a 400 turns coil that is 10 cm long and 12 cm wide. The coil rotates at 8 rev/s in a…

A:

Q: A sheet of copper is placed between the poles of an electromagnet with the magnetic field…

A: Force required to pulled out the sheet is given by :- F = q(V×B) Here, q = charge on sheet     V =…

Q: A conducting rod is positioned between two poles of a large magnet, with 26 cm of the rod within the…

A: Given data :- length L = 26 cm = 0.26 m magnetic field B = 0.045 T magnetic force Fm = 1.7 × 10-3 N…

Q: A copper ring and a gold ring of the same dimensions are placed in magnetic fields so that there is…

A: Since, the change in the flux is same for both the rings, the induced EMF in both of them is the…

Q: Which option most accurately defines Faraday's law? Any change in the electric field over a…

A: Introduction: According to Faraday's law, the rate of change of the magnetic flux generates the…

Q: A magnetic field has a magnitude of 1.5 ×10–3 T, and an electric field has a magnitude of 4.5 ×103…

A:

Q: 8. A length of 20-gauge copper wire (of diameter 0.8118 mm) is formed into a circular loop with a…

A:

Q: As per Faraday's law of electromagnetic induction, an emf is induced in a conductor whenever it…

A: Electromagnetic induction can be said to be a process in which when a charged object is passed…

Q: The point form of Ampere's law tells us that: a.) Currents produce steady magnetic fields b.) The…

A: Ampere's circuital law is always one applicable for steady current. So option (a) is true.    The…

Q: Why does a current-carrying wire has a magnetic field around it? A. The current aligns the…

A: When a current is flowing through a wire, it means that the charges are flowing through the wire .

Q: 1.0 How many turns should a coil with a diameter of 50 mm needs to generate 24 v of electricity when…

A: The magnetic field due to a circular coil carrying current is given by:B=μ0nI2rwheren is number of…

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.