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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Name the following diagram and explain the concept behind it. - Science and Technology 1

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प्रश्न

Name the following diagram and explain the concept behind it.

स्पष्ट करा

उत्तर

Fleming's right-hand rule

It represents Fleming's right-hand rule used for finding the direction of induced current with respect to the directions of the magnetic field and motion of the conductor.

The direction of current induced in a conductor can be obtained by holding the thumb, the index finger, and the middle finger of your right hand mutually perpendicular to each other. In this situation, the thumb indicates the direction of the motion of the conductor, the index finger points along the magnetic field, and the middle finger points along the current induced in the conductor.

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पाठ 4: Effects of electric current - Exercises [पृष्ठ ६१]

संबंधित प्रश्‍न

The magnetic flux through a loop varies according to the relation Φ = 8t2 + 6t + C, where ‘C’ is constant, 'Φ' is in milliweber and 't' is in second. What is the magnitude of induced e.m.f. in the loop at t = 2 seconds.


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  1. What is the instantaneous value of the emf induced in the wire?
  2. What is the direction of the emf?
  3. Which end of the wire is at the higher electrical potential?

If ‘R’ is the radius of dees and ‘B’ be the magnetic field of induction in which positive charges (q) of mass (m) escape from the cyclotron, then its maximum speed (vmax) is _______.

A) `(qR)/(Bm)`

B)`(qm)/(Br)`

C) `(qBR)/m`

D) `m/(qBR)`


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 What do you understand by the term "electromagnetic induction"? Explain with the help of a diagram. 


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(a) the speed with which the magnet is moved
(b) the number of turns of the coil
(c) the resistivity of the wire of the coil
(d) the strength of the magnet


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A conducting rod is moved with a constant velocity v in a magnetic field. A potential difference appears across the two ends _____________ .


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(a) `1/(RC)`

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(c) `1/sqrt(LC)`

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(a) Name the parts labeled A and B.
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(c) Which of the output terminals is positive if the coil is rotating in the
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doubling the speed of rotation of the coil, keeping th e speed
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(R1 and R2 are radii of CD and EF respectively. l = current in the loop, μ0 = permeability of free space)

 


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