What is the function of commutator?

Q: What should be the power of the voltage supply that we will use in the acceleration region?

A: The force experienced when the particle of charge q moves at velocity v in uniform magnetic field is…

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

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Q: A transformer works on the principle of

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Q: Determine the value of the commutator O a. i (hbar) O b. -i (hbar) C. O

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Q: Capacitors store energy in their magnetic field True OR False ?

A: Step1 - Understanding the concept of energy stored in a capacitor.              As we know that,…

Q: A loop is placed in a region having flux=3t(t is time). An ideal voltmeter is attached as shown in…

A: Let ϕ denotes the flux, t denotes the time, and θ denotes the angle. Therefore, the induced emf can…

Q: If you cut a bar magnetic in half, you would be left with a piece that has just a "N" end and the…

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Q: What happens to the length of a suspended spring when a current passes through it?

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Q: Discuss the Sources of Para-magnetism and the origin of permanent magnetic moments

A: Para-magnetism is a form of magnetism, where the materials (para-magnetic materials) are weakly…

Q: Calculate the magnetic field strength of a toroid with n turns.

A: Solution:           To be given in question        Calculate the magnetic field strength of a toroid…

Q: What is a solenoid?

A: Solenoids are simple components that can be used for various applications. They are available in…

Q: What exactly is a socket?

A: A socket is a device that allows electrical equipment to connect with the electrical power supply…

Q: Is the element Si within the ferromagnetic or paramagnetic or Diamagnetic ??

A: Diamagnetic material is repelled by magnetic field.  Paramagnetic material are weekly attracted by…

Q: At the micro level, what is the difference between an unmagnetized iron nail and a magnetized iron…

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Q: Can a constant magnetic field set a proton at rest into motion?Explain your answer.

A: Given:A proton is put into a constant magnetic field.

Q: The energy stored per unit volume inside a solenoid is calculated by?

A: solution: To calculate the energy stored in the solenoid

Q: RI R2 Jhe loops are abh ga I dand Loob 2- R6 ن E2 bcdhb R3 R4 feo 3 - g hdefg g abcefa acdga Rs Joop…

A: Refer the current distribution in branches as assumed next step. By KVL we have .

Q: What is the symbol for a solenoid?

A: A solenoid is a type of electromagnet. It is long coil of wire wrapped in many turns. The purpose of…

Q: There are 2 thin uniform rods. Rod DC is pinned at its center of gravity (free to rotate 360…

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Q: DEfine inductive time constant?

A: The inductive constant  is  Where L is the inductance and R is the resistance.

Q: When you bring a current-carrying wire down onto the top of a compass, aligned with the original…

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Q: A long straight wire is in the plane of a rectangular conducting loop. The straight wire carries a…

A: Given the current through the wire is 'i' Let the distance from the wire to the centre of rectangle…

Q: Which of the following is not true for ferromagnetic materials? Please choose one:

A: Ferromagnetic materials magnetized strongly when they placed in external magnetic field

Q: How would the magnetic field look like for this solenoid?

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Q: Find the equations of 4 junction and 7 loops for the figure given Given that:…

A: Here given the circuit diagram . There are four junction and seven loop. We have to write the…

Q: Would you prefer a soft or a hard magnet to use in a memory application? Explain why?

A: A soft magnetic material will obviously not make a good permanent magnet, because its remaining…

Q: Find the value of the commutator

A: The correct option is C. Commutator of  of a quantity with itself is zero: A^ ,A^=0…

Q: A system displaying a hysteresis loop such as a ferromagnet, is a device for storing memory?’…

A: It is said that a system displaying a hysteresis loop such as ferrimagnets’ is a device for storing…

Q: Will dropping a magnet down a long copper tube produce a current in the walls of the tube? And why?

A: When the magnet is dropped down the long copper tube, it takes considerable time to exit the tube.…

Q: The relationship between the magnetic field and the magnetic energy density?

A: Let us assume that B is the magnetic field and UB  is magnetic field density. The magnetic field…

Q: An electric motor does not function properly without a commutator. What is a commutator?

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Q: in your own words what is a magnetic domain?

A: A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform…

Q: The velocity v(t) in the table below is increasing for Osts12.

A: Answer

Q: The net voltage change around any loop is zero. It means that:

A: Voltage or electric potential difference is the difference in the electric potential between the two…

Q: What is another name for a solenoid?

A: The coil should when have a length longer than its diameter it is known as a solenoid. Let us…

Q: Magnetic potential is 1)scalar potential 2)vector potential 3) both 4)non of these

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Q: What is the role of the split ring in an electric motor?

A: Split ring is containing a simple ring or cylindrical shell. This shell or ring split axially to…

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.