A coil carrying electric current is placed in uniform magnetic field, then
AIPMT 1993, Easy
Download our app for free and get startedPlay store
(a) As magnetic field is uniform so its rate of change with time is zero. By Faraday's law of induction, no emf is induced.

But current carrying coil experience torque inside magnetic field, which is cross product of magnetic moment of the coil and the magnetic field. $\vec{\tau}=\vec{M} \times \vec{B}$

Option $A$ is correct.                                    

art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A charge of $4.0 \mu \mathrm{C}$ is moving with a velocity of $4.0 \times 10^6 \mathrm{~ms}^{-1}$ along the positive $\mathrm{y}$-axis under a magnetic field $\vec{B}$ of strength $(2 \hat{k})\  T$. The force acting on the charge is $x \hat{i} N$. The value of $x$ is__________.
    View Solution
  • 2
    The phosphor bronze strip is used in a moving coil galvanometer because
    View Solution
  • 3
    The magnetic field near a current carrying conductor is given by
    View Solution
  • 4
    Under the influence of a uniform magnetic field a charged particle is moving in a circle of radius $R$ with constant speed $v$. The time period of the motion
    View Solution
  • 5
    If a charged particle goes unaccelerated in a region containing electric and magnetic fields
    View Solution
  • 6
    A wire of length $314\,cm$ carrying current of $14\,A$ is bent to form a circle. The magnetic moment of the coil is $........A- m ^{2}$. [Given $\left.\pi=3.14\right]$
    View Solution
  • 7
    Figure shows a square current carrying loop $ABCD$ of side $10\,\, cm$ and current $i = 10\,A$. The magnetic moment $\vec M$ of the loop is
    View Solution
  • 8
    An infinitely long hollow conducting cylinder with radius $R$ carries a uniform current along its surface. Choose the correct representation of magnetic field $(B)$ as a function of radial distance $(r)$ from the axis of cylinder
    View Solution
  • 9
    The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its
    View Solution
  • 10
    A square frame of side I carries a current $i$. The magnetic field at its centre is $B$. The same current is passed through a circular coil having the same perimeter as the square. The field at the centre of the circular coil is $B^{\prime}$. The ratio of $\frac{B}{B^{\prime}}$ is
    View Solution