Why would a galvanometer needle deflect in one direction when a magnet goes into a coil and in the opposite direction when the magnet is pulled back out?

Q: A solenoid is wound with N=753 turns on a form that has a diameter of d=3.6cm and length of 1-41cm.…

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Q: A conductor suspended by two flexible wires as shown in the figure below has a mass per unit length…

A: a) Write the expression for the force. Here, m represents the mass, B represents the magnetic…

Q: energy of a magnetic dipole in an external magnetic field is l (the same energy is associated with…

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Q: A 1300-turn coil of wire 2.00 cm in diameter is in a magnetic field that increases from 0 T to 0.140…

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Q: Make a prediction: Increasing the number of coil windings around the iron bar will make the strength…

A: If we wind a wire around a iron bar then this behaves as solenoid with a medium.

Q: A magnetic field exerts a maximum torque to on a flat, current-carrying rectangular coil of N loops.…

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Q: moves along the +x axis at a speed of 1.0 x 10 m/s. A uniform 0.1-1 field is parallel to the xz…

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Q: ** 22. The diagram at right shows a magnet that has been placed near a wire. When the switch is…

A: When the switch is closed, the north points outside, and the south points inwards.

Q: How big is the pulling force? A7.00-cm-long wire is pulled along a U-shaped conducting rail in a…

A: Given Length l         = 7.00 cm = 0.07 m   Resistance R = 0.320 Ω Velocity v      = 4.00 m/s Power…

Q: Example A magnetic blood flow meter is positioned across blood vessel 5 x 10 m in diameter. With a…

A: Solution: Given that diameter d = 5x10-3 m magnetic field B  = 3x10-3 T induced voltage e = 15x10 V

Q: A transmission line strung 5 m above the ground carries a current of 400 A. What is the magnetic…

A: Magnetic field due to straight wire is  B=μ0I2πr =4π×10-7 Hm400 A2π5 m =1.6×10-5 T =0.016 mT

Q: A neutral metal bar is moving at constant velocity   to the right through a region where there is a…

A: We are given a metal bar. This bar is neutral. This is moved perpendicular to a uniform magnetic…

Q: A solenoid used to produce magnetic fields for research purposes is 2.1 m long, with an inner radius…

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Q: Answer is also mentioned in picture containing the question. Kindly check the answer before…

A: As the conducting liquid flows through magnetic field the induced back emf acting in opposite…

Q: Q8. What if you were to start with the south pole of the bar magnet sitting in the front half of…

A: A magnetic field is created by an electric current flowing through a wire.

Q: 24. Consider Plates I, II, and III shown below which are all made of metal. Which of the following…

A: For this question, we have to identify which statement is true, based on the U shped magnet working…

Q: A rod hangs from two wires as shown. A current / goes down one wire, through the conducting rod into…

A: A charge q moving with velocity v→ in the presence of a magnetic field B→, will experience a force…

Q: A picture of the magnetic field vectors around two conducting wires (red and blue dots on the page)…

A: The magnetic field lines due to a straight conductor carrying current are in the form of concentric…

Q: What is the magnitude of the magnetic field at a point midway between them if the top one carries a…

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Q: Recall the lab where you used an oscilloscope to study the impact of a magnetic field on a beam of…

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Q: A square loop of side a carries a current I. Calculate the magnetic field in the center of the loop

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Q: A circular ring of wire consisting of 10 loops carries a current of 2.0 A is in a magnetic field of…

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Q: A current loop carries a current with the direction indicated as shown in the figure. What is the…

A: Answer               F out of page

Q: Two long straight wires run parallel to one another with current flowing in opposite directions…

A: The two long straight wires are placed parallel to each other, with current in each flowing in…

Q: The magnetic field at a point to the right of a vertical wire points out of the screen as shown in…

A: CONCEPT- Change in magnetic field produce that is flux only produces current.

Q: You have designed and constructed a solenoid to produce a magnetic field equal in magnitude to that…

A: Magnetic field B = 5× 10-5 T  No of turn N = 500, Length L = 38cm         L       = 0.38 m So,…

Q: A 5-turns circular loop of wire is initially oriented with a uniform magnetic field of 4 T. The loop…

A: Here given the circular coil of 5 turns .The magnetic field is 4T .By rotation 90° it is…

Q: A solenoid consisting of 100 turns, of radius 1 cm, is 10 cm long and carries a current of 5 A. Fill…

A: Turns (N) = 100  Radius (r) = 1 cm or r = 0.01 m Length (L) = 10 cm  or L = 0.1 m Current (I)  = 5 A

Q: Which of the following best describes how electrically charged particles and a magnetic field can…

A: Recall Biot-savart law. When electric current flows through a wire a magnetic field is setup around…

Q: Find the magnetic field at point P for the steady current I in Figure 16. R Figure 16

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Q: One current loop is placed inside another current loop with twice the radius as showm in figure.…

A: Two current loops are placed . The direction of current is opposite in both the circles . To find =…

Q: A thin, circular coil with 13 turns that has a radius of 16.7 cm carries a current of 2.45 A. What…

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Q: The magnetic field produced by an MRI solenoid 2.3 m long and 1.3 m in diameter is 1.6 T. You may…

A: Given Data : The length of the solenoid is given as L = 2.3m. The diameter of the solenoid is given…

Q: Bnbbb bhnj.

A: The objective of the question is to determine the path of a negatively-charged particle moving in a…

Q: Consider Plates I, II, and III shown below which are all made of metal. Which of the following…

A: Motional EMF is induced when a conductor moves in a mgnetic field or when a magnetic field moves…

Q: The south pole of a bar magnet passes through a horizontal wire loop from above in the direction…

A: here the south pole of bar magnet passes through a horizontal wire loop from above.

Q: 7. The figure shows a uniform magnetic field that is normal to the plane of a conducting loop with…

A: Let us consider a uniform magnetic field (B) that is normal to the plane of a conducting loop with…

Q: The electric motor - An electric motor is a device where you input current to a loop (or stack of…

A: In this question we are given that an electric motor is a device where you input current to a loop…

Q: Two permanent magnets A N B N E 13. Which of the following statement/s islare TRUE? * I. In…

A: We Will find magnetic field using magnetic dipole equation. In electromagnetism, a magnetic dipole…

Q: Which loops have induced current moving in the CLOCKWISE direction around the loop?

A: Magnetic field around a wire is given as  B = μoI2πr Where I is current flowing in wire and r is…

Q: Example A magnetic blood flow meter is positioned across blood vessel 5 x 10 m in diameter. With a…

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Q: A proton is moving in a uniform magnetic field as depicted below.

A: A proton is moving in a uniform magnetic field B. Charge on the proton=q Force acting on the…

Q: A long, straight wire is carrying a current of 5.0 A in the direction shown in the figure. The point…

A: From the right hand thumb rule,  when the right hand of your thumb placed in the  direction of…

Q: a. b. EE In the three cases above are wires forming a conducting loop in a magnetic field. Some of…

A: When the magnet is moved across a circuit, by changing the magnetic field and magnetic flux, voltage…

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.