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Verify that the Units Weber and Volt Second Are the Same. - Physics

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प्रश्न

Verify that the units weber and volt second are the same.

टीपा लिहा

उत्तर

Force experienced by the charge q moving with velocity v  in a magnetic field B is given by
F = qVB
Hence, B = `F/(qV)`
Also, weber/m​2 is the unit for magnetic field B.
Now, equating both the units of the magnetic field B, we get:
`Weber/m^2 = "f"/ (qxxv)`
⇒ `Weber = Fxxm^2/(qxxmxxs^-1) =( Fxxm)/(qxxs^-1)=W/qxx s ="Volt"xxs`
Thus, the units weber and volt second are same.

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पाठ 12: Magnetic Field - Short Answers [पृष्ठ २२९]

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एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
पाठ 12 Magnetic Field
Short Answers | Q 10 | पृष्ठ २२९

संबंधित प्रश्‍न

Draw a neat labelled diagram for the construction of 'cyclotron'


Which one of the following particles cannot be accelerated by a cyclotron?

(A) Electrons

(B) Protons

(C) Deuterons

(D) α- particles


State the principle of a cyclotron.


A deuteron and a proton are accelerated by the cyclotron. Can both be accelerated with the same oscillator frequency? Give reason to justify your answer.


Draw a schematic sketch of a cyclotron. Explain clearly the role of crossed electric and magnetic field in accelerating the charge. Hence derive the expression for the kinetic energy acquired by the particles.


An α-particle and a proton are released from the centre of the cyclotron and made to accelerate.

(i) Can both be accelerated at the same cyclotron frequency?

Give reason to justify your answer.

(ii) When they are accelerated in turn, which of the two will have higher velocity at the exit slit of the does?


A cyclotron is used to accelerate protons to a kinetic energy of 5 MeV. If the strength of magnetic field in the cyclotron is 2T, find the radius and the frequency needed for the applied alternating voltage of the cyclotron. (Given : Velocity of proton= `3xx10^7 m//s`)


Which of the following particles will describe the smallest circle when projected with the same velocity perpendicular to a magnetic field?


Figure shows a rod PQ of length 20.0 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20.0 cm each. A magnetic field of strength 0.500 T exists in the vicinity of the wire PQ, as shown in the figure. The wires connecting PQ with the battery are loose and exert no force on PQ. (a) Find the tension in the threads when the switch is open. (b) A current of 2.0 A is established when the switch S is closed. Find the tension in the threads now.


A conducting wire of length l, lying normal to a magnetic field B, moves with a velocity v,as shown in the figure. (a) Find the average magnetic force on a free electron of the wire. (b) Due to this magnetic force, electrons concentrate at one end, resulting in an electric field inside the wire. The redistribution stops when the electric force on the free electrons balances the magnetic force. Find the electric field developed inside the wire when the redistribution stops. (c) What potential difference is developed between the ends of the wire?


(a) An electron moves along a circle of radius 1 m in a perpendicular magnetic field of strength 0.50 T. What would be its speed? Is it reasonable? (b) If a proton moves along a circle of the same radius in the same magnetic field, what would be its speed?


A cyclotron's oscillator frequency is 10 MHz. What should be the operating magnetic field for accelerating protons? If the radius of its 'dees' is 60 cm, calculate the kinetic energy (in MeV) of the proton beam produced by the accelerator.


Cyclotron is used to ______.


Assertion: The frequency of circular motion of a charged particle in cyclotron is independent of the mass of the particle.
Reason: Greater the mass of the particle less will be the frequency of the particle.


In cyclotron the gyro radius is ______.

In cyclotron the resonance condition is ______.

Cyclotron is used to accelerate ______.

A charged particle is moving in a cyclotron, what effect on the radius of path of this charged particle will occur when the frequency of the ratio frequency field is doubled?


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