When the magnetic field changes in a coil of wire, voltage in each loop of the coil is induced. Will voltage be induced in a loop if the source of the magnetic field is the coil itself?

Q: A bar magnet is dropped toward a conducting ring lying on the floor. As the magnet falls toward the…

A: When a conductor is subjected to a varying magnetic field the change in magnetic flux will induce an…

Q: An unmagnetized nail will not attract an unmagnetizedpaper clip. However, if one end of the nail is…

A: Attraction force by a magnet

Q: What happens to the magnetic field of a solenoid if length become double?

A:

Q: In electromagnetic induction, explain how does the number of coils affect the current produced?

A: Induced voltage is directly proportional to the number of coils. Therefore, current produced is…

Q: A magnet is moving toward a solenoid and a potential difference is induced between the two ends of…

A: a) if the speed of magnet is increased induced emf will increase because rate of change of flux will…

Q: If the current running through an inductor is increased by a factor of 3, by how much does the…

A: Given:- The  current running through an inductor is increased by a factor of 3 Find:- how much…

Q: A cycle wheel has 10 spokes each of length 0.5 m long is rotated at a speed of 18 km/hr in a plane…

A: We had to compute- (a) Emf induced between the axle and the rim of cycle wheel (e1)=? (b) Emf…

Q: When the magnetic flux through a loop of wire is changing the current always flows to what?

A:

Q: Any change in magnetic flux induces an emf. Explain it?

A: According to the laws of electromagnetic induction, when the magnetic flux linked with the coil…

Q: The strength of poles of a bar magnet 20 cm long is 50 A-m. Find the magnetic induction at a point…

A:

Q: What direction of the magnetic field causes a counterclockwise direction of induced emf on the…

A: According to Lenz law, The direction of the induced emf that drives current around a wire loop is…

Q: If the north pole of magnet is moved towards the coil, the induced current in the coil will be…

A: According to Lenz’s law, the emf is induced in the coil to oppose the change.

Q: A spacecraft orbiting the Earth has a coil of wire in it. An astronaut measures a small current in…

A: Given A spacecraft orbiting the Earth has a coil of wire in it. An astronaut measures a small…

Q: Question: A wire loop moves at a constant velocity 2.0 m/s through a constant magnetic field of 0.1…

A:

Q: Explain: A changing magnetic field near a conductor induces a current in the conductor

A: The magnetic field (B) around a magnet or a conductor is the region in which any other conductor or…

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

A: In this question we have to answer how the given situation is associated with induction. Please give…

Q: If you place a metal ring in a region in which a magnetic field is rapidly alternating, the ring may…

A: Given: A metal ring

Q: Magnetic dipole moment (м) of the coil, place in . uniform magnetic field of induction ( B does not…

A: Magnetic dipole moment be M The magnetic field of Induction is B Magnetic dipole moment is given by…

Q: the induced current opposes the decay of current in the coil when the main current in the coil…

A: TRUE Self induction :-  Self inductance is the characteristic of the coil itself. The induced…

Q: 7) Currents induced by rapid field changes in an MRI solenoid can, in some cases, heat tissue in the…

A: a) Change in magnetic field,  ∆B=B2-B1∆B=0-1.6 ∆B=-1.6 T Length of the loop, L=8 cm=0.08 m Radius of…

Q: You put a metal ring into a region where the magnetic field is changing quickly. You notice that the…

A: Basic information The magnetic field is the area around the magnet where the magnetic force can be…

Q: Which possible direction would the metal bar move so the lower end has a higher voltage than the…

A: The force on charge in magnetic field is given by  F = q(v × B)  On electron F = -e(v × B)

Q: The induced emf of a dc machine running at 750 rpm is 220 V. The percentage increase in field flux…

A: Given that,Initially, Induced emf, E1=220 VoltSpeed of motor, N1=750 rpm.When, Emf, E2=250 VoltSpeed…

Q: In an alternator magnets are rotated within windings of conductive wire to produce an emf, is this…

A: An alternator or AC generator is an electrical generator that converts mechanical energy to…

Q: The magnetic field due to current in wires in your homecan affect a compass. Discuss the effect in…

A: Answer:   The standard value of current for household circuits are 20 Ampere. When the current…

Q: If the magnetic field faces into the wall while its magnitude is increasing, what would be the…

A: Given, The varying magnetic field

Q: A electric motor has a current running through it and it is rotating counterclockwise in an external…

A: We have an electric motor with a current running through it and it is rotating counterclockwise in…

Q: In an electric trolley or bus system, the vehicle’s motor draws current from an overhead wire by…

A: Given: Single isolated circuit, When a current passes the present of the circuit ,there sets up the…

Q: In Faraday’s apparatus, No current flows through the galvanometer when the switch remains closed or…

A: According to question: The galvanometer is used to detect any current induced in a separate coil on…

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.