General
Easy
Physics-

A current carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III and IV, arrange them in the decreasing order of potential energy
III

IIIIV

Physics-General

  1. I greater than I I I greater than I I greater than I V    
  2. I greater than I I greater than I I I greater than I V    
  3. I greater than I V greater than I I greater than I I I    
  4. I I I greater than I V greater than I greater than I I    

    Answer:The correct answer is: I greater than I V greater than I I greater than I I IPotential energy, U equals M. B equals negative M N cos invisible function application theta
    Here M = magnetic moment of the loop
    theta equals angle between M and B
    U is maximum when theta equals 180 degree and minimum when theta equals 0 degree. So as theta decrease from 180 degree blank t o blank 0 degree its PE also decreases.

    Book A Free Demo

    +91

    Grade*

    Related Questions to study

    General
    physics-

    When a body having mass m is suspended from the free end of two springs suspended from a rigid support, as shown in figure, its periodic time of oscillation is T.  If only one of the two springs are used, then the periodic time would be…

    When a body having mass m is suspended from the free end of two springs suspended from a rigid support, as shown in figure, its periodic time of oscillation is T.  If only one of the two springs are used, then the periodic time would be…

    physics-General
    General
    physics-

    As shown in figure, two masses of 3.0 kg and 1.0 kg are attached at the two ends of a spring having force constant 300 Ntext end text m to the power of negative 1 end exponent. The natural frequency of oscillation for the system will be .......hz (Ignore friction)

    As shown in figure, two masses of 3.0 kg and 1.0 kg are attached at the two ends of a spring having force constant 300 Ntext end text m to the power of negative 1 end exponent. The natural frequency of oscillation for the system will be .......hz (Ignore friction)

    physics-General
    General
    chemistry-

    Which of the following statements are correct?
    A) Like halogens, hydrogen combine with non metals forming covalent compounds.
    B) Hydrogen as well as halogens have tendency of accepting electrons.
    C) The oxide of hydrogen is natural, as is the case with oxide of halogens
    D) Hydrogen and halogen form hydride ions with equal ease.

    Conceptual

    Which of the following statements are correct?
    A) Like halogens, hydrogen combine with non metals forming covalent compounds.
    B) Hydrogen as well as halogens have tendency of accepting electrons.
    C) The oxide of hydrogen is natural, as is the case with oxide of halogens
    D) Hydrogen and halogen form hydride ions with equal ease.

    chemistry-General
    Conceptual
    General
    physics-

    If a bar magnet of length land cross-sectional area A is cut into two equal parts as shown in figure, then the pole strength of each pole becomes

    Pole strength depends on material of magnet, state of magnetization and cross-sectional area. As m proportional to A comma so if Abecomes half, pole strength gets half.

    If a bar magnet of length land cross-sectional area A is cut into two equal parts as shown in figure, then the pole strength of each pole becomes

    physics-General
    Pole strength depends on material of magnet, state of magnetization and cross-sectional area. As m proportional to A comma so if Abecomes half, pole strength gets half.
    General
    physics-

    Three identical springs are shown in figure. When a 4 kg mass is suspended from spring A, its length increases by lcm. Now if a 6 kg mass is suspended from the froe end of spring C, then increase in its length is.

    Three identical springs are shown in figure. When a 4 kg mass is suspended from spring A, its length increases by lcm. Now if a 6 kg mass is suspended from the froe end of spring C, then increase in its length is.

    physics-General
    General
    maths-

    left parenthesis a with not stretchy bar on top times ı with not stretchy bar on top right parenthesis squared plus left parenthesis a with not stretchy bar on top times ȷ with not stretchy bar on top right parenthesis squared plus left parenthesis a with not stretchy bar on top times k with not stretchy bar on top right parenthesis squared equals

    left parenthesis a with not stretchy bar on top times ı with not stretchy bar on top right parenthesis squared plus left parenthesis a with not stretchy bar on top times ȷ with not stretchy bar on top right parenthesis squared plus left parenthesis a with not stretchy bar on top times k with not stretchy bar on top right parenthesis squared equals

    maths-General
    General
    physics

    Three forces are acting simultaneously on a particle mowing with velocity straight V with rightwards arrow on top.These forces are represcaled in magnitude and direction by the three sides of a triangle . The particle will now move with velocity…..

    Three forces are acting simultaneously on a particle mowing with velocity straight V with rightwards arrow on top.These forces are represcaled in magnitude and direction by the three sides of a triangle . The particle will now move with velocity…..

    physicsGeneral
    General
    physics-

    As shown in figure, a body having mass m is attached with two springs having spring constants k1 and k subscript 2 end subscript - The frequency of oscillation is f. Now, if the springs constants of both the springs are increased 4 times, then the frequency of oscillation will be equal to .

    As shown in figure, a body having mass m is attached with two springs having spring constants k1 and k subscript 2 end subscript - The frequency of oscillation is f. Now, if the springs constants of both the springs are increased 4 times, then the frequency of oscillation will be equal to .

    physics-General
    General
    physics-

    The figure shows a graph of displacement versus time for a particle executing S.H.M. The acceleration of the S.H.O. at the end of time t equals fraction numerator 4 over denominator 3 end fraction second is…..cm-2

    The figure shows a graph of displacement versus time for a particle executing S.H.M. The acceleration of the S.H.O. at the end of time t equals fraction numerator 4 over denominator 3 end fraction second is…..cm-2

    physics-General
    General
    physics-

    As shown in figure, the object having mass M is executing S.H.M. with an amplitude A The amplitude of point P shown in figure will be ……

    As shown in figure, the object having mass M is executing S.H.M. with an amplitude A The amplitude of point P shown in figure will be ……

    physics-General
    General
    physics

    A plate of mass M is placed on a horizontal frictionless surface and a body of mass m  is placed on this plate, The coefficient of dynamic friction between this body and the plate is µ . If a force 2µmg. is applied to the body of mass in along the horizonal direction the acceleration of the plate will be ……

    A plate of mass M is placed on a horizontal frictionless surface and a body of mass m  is placed on this plate, The coefficient of dynamic friction between this body and the plate is µ . If a force 2µmg. is applied to the body of mass in along the horizonal direction the acceleration of the plate will be ……

    physicsGeneral
    General
    physics

    On the horizontal surface of a truck (=0.6) . a block of mass 1kg is placed. If the truck is accelerating at the rale of 5 m/s2 then frictional force on the block will be_

    On the horizontal surface of a truck (=0.6) . a block of mass 1kg is placed. If the truck is accelerating at the rale of 5 m/s2 then frictional force on the block will be_

    physicsGeneral
    General
    physics

    A force of 8 N acts on an object of mass 5 kg in X- direction and another force of 6 N  acts on in in Y . direction. Hence, the magnitude of acceleration of object will be

    A force of 8 N acts on an object of mass 5 kg in X- direction and another force of 6 N  acts on in in Y . direction. Hence, the magnitude of acceleration of object will be

    physicsGeneral
    General
    maths-

    If vertical line a with not stretchy bar on top vertical line equals 3 comma vertical line b with not stretchy bar on top vertical line equals 4 text  and  end text left parenthesis a with not stretchy bar on top comma b with not stretchy bar on top right parenthesis equals pi over 2 text , then  end text vertical line a with not stretchy bar on top plus b with not stretchy bar on top vertical line equals

    If vertical line a with not stretchy bar on top vertical line equals 3 comma vertical line b with not stretchy bar on top vertical line equals 4 text  and  end text left parenthesis a with not stretchy bar on top comma b with not stretchy bar on top right parenthesis equals pi over 2 text , then  end text vertical line a with not stretchy bar on top plus b with not stretchy bar on top vertical line equals

    maths-General
    General
    maths-

    Letf left parenthesis x right parenthesis equals fraction numerator x plus 1 over denominator x minus 1 end fraction comma text  fof  end text left parenthesis x right parenthesis equals f squared left parenthesis x right parenthesis semicolon f o f o f left parenthesis x right parenthesis equals f cubed left parenthesis x right parenthesis comma text  fofofof  end text left parenthesis x right parenthesis equals f to the power of 4 left parenthesis x right parenthesis horizontal ellipsis text  then  end text f subscript left parenthesis x right parenthesis end subscript superscript 2008 equals

    Letf left parenthesis x right parenthesis equals fraction numerator x plus 1 over denominator x minus 1 end fraction comma text  fof  end text left parenthesis x right parenthesis equals f squared left parenthesis x right parenthesis semicolon f o f o f left parenthesis x right parenthesis equals f cubed left parenthesis x right parenthesis comma text  fofofof  end text left parenthesis x right parenthesis equals f to the power of 4 left parenthesis x right parenthesis horizontal ellipsis text  then  end text f subscript left parenthesis x right parenthesis end subscript superscript 2008 equals

    maths-General