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Moving Charges and Magnetism Physics - Moving Charges and Magnetism

Rajasthan Board (RBSE) - STD 12 Science - Physics (Rajasthan - English Medium). 37 questions in this chapter.

Question types

Moving Charges and Magnetism question types

37 questions across 4 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

37
Questions
4
Question groups
5
Question types
Sample Questions

Moving Charges and Magnetism questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
The magnetic dipole moment of a current carrying coil does not depend upon :
  • A
    number of turns of the coil
  • B
    cross-sectional area of the coil
  • C
    current flowing in the coil
  • ✓
    material of the turns of the coil

Answer: D.

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Q 2M.C.Q (1 Marks)1 Mark
An electron of charge e moves parallel to uniform lines of force in magnetic field B with velocity v. Force acting on electron is :
  • A
    evB
  • B
    $ev/B$
  • ✓
    zero
  • D
    $Bv/e$

Answer: C.

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Q 3M.C.Q (1 Marks)1 Mark
The value of $(\mu_{0}\in_{0})^{-1/2}$ is :
  • A
    $3\times10^{8}$ cm/second
  • ✓
    $3\times10^{10}$ cm/second
  • C
    $3\times10^{9}$ cm/second
  • D
    $3\times10^{8}$ km/second

Answer: B.

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Q 4M.C.Q (1 Marks)1 Mark
The value of torque ($\vec{\tau}$) experienced by current loop of magnetic moment $(\vec{m})$ placed in magnetic field ($\vec{B}$) is :
  • ✓
    $\vec{\tau}=\vec{m}\times\vec{B}$
  • B
    $\vec{\tau}=\vec{B}\times\vec{m}$
  • C
    $\vec{\tau}=\frac{\vec{m}}{\vec{B}}$
  • D
    $\vec{\tau}=\frac{\vec{B}}{\vec{m}}$

Answer: A.

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Q 5M.C.Q (1 Marks)1 Mark
The energy density of magnetic field $\vec{B}$ is :
  • ✓
    $\frac{B^{2}}{2\mu_{0}}$
  • B
    $\frac{B^{2}}{\mu_{0}}$
  • C
    $\frac{B^{2}}{4\mu_{0}}$
  • D
    $\frac{B^{2}}{3\mu_{0}}$

Answer: A.

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Q 145 Marks Questions5 Marks
Write the Biot-Savart's law and use it to obtain the expression for the magnetic field at the point on the axis of a current carrying circular loop.
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Q 155 Marks Questions5 Marks
Describe the principle and working of a cyclotron with proper diagram. Give the expression of cyclotron frequency and kinetic energy of the particle regarding cyclotron.
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