Torque & Magnetic Dipole
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PHXII04:MOVING CHARGES AND MAGNETISM

363036 A magentic dipole in a constant magnetic field has

1 Maximum potential energy when the torque is maximum
2 Zero potential energy when the torque is maximum
3 Zero potential energy when the torque is minimum
4 minimum potential energy when the torque is maximum
JEE - 2017
PHXII04:MOVING CHARGES AND MAGNETISM

363037 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
supporting img

1 I \(>\) II \(>\) III \(>\) IV
2 I \(>\) III \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 I \(>\) IV \(>\) II \(>\) III
PHXII04:MOVING CHARGES AND MAGNETISM

363038 A circular current loop of magnetic moment \(M\) is in an arbitrary orientation in an external uniform magnetic field \(\overrightarrow B \). The work done to rotate the loop of \(30^{\circ}\) about an axis perpendicular to its plane is

1 \(\frac{{MB}}{2}\)
2 \(MB\)
3 Zero
4 \(\sqrt 3 \frac{{MB}}{2}\)
KCET - 2019
PHXII04:MOVING CHARGES AND MAGNETISM

363039 A metallic wire is folded to form a square loop of side ' \(a\) '. It carries a current ' \(i\) ' and is kept perpendicular to a uniform magnetic field. If the shape of the loop is changed from square to a circle without changing the length of the wire and current, the amount of work done in doing so is

1 \(i B a^{2}(\pi+2)\)
2 \(i B a^{2}(\pi-2)\)
3 \(i B a^{2}\left(\dfrac{4}{\pi}+1\right)\)
4 \(i B a^{2}\left(1-\dfrac{4}{\pi}\right)\)
PHXII04:MOVING CHARGES AND MAGNETISM

363040 A current loop in a magnetic field

1 Can be in equilibrium in one orientation
2 Can be in equilibrium in two orientations, both the equilibrium states are unstable
3 Can be in equilibrium in two orientations, one stable while other is unstable
4 Experiences a torque whether the field is uniform or non-uniform in all orientations
NEET DIGITAL LIBRARY
PHXII04:MOVING CHARGES AND MAGNETISM

363036 A magentic dipole in a constant magnetic field has

1 Maximum potential energy when the torque is maximum
2 Zero potential energy when the torque is maximum
3 Zero potential energy when the torque is minimum
4 minimum potential energy when the torque is maximum
JEE - 2017
PHXII04:MOVING CHARGES AND MAGNETISM

363037 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
supporting img

1 I \(>\) II \(>\) III \(>\) IV
2 I \(>\) III \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 I \(>\) IV \(>\) II \(>\) III
PHXII04:MOVING CHARGES AND MAGNETISM

363038 A circular current loop of magnetic moment \(M\) is in an arbitrary orientation in an external uniform magnetic field \(\overrightarrow B \). The work done to rotate the loop of \(30^{\circ}\) about an axis perpendicular to its plane is

1 \(\frac{{MB}}{2}\)
2 \(MB\)
3 Zero
4 \(\sqrt 3 \frac{{MB}}{2}\)
KCET - 2019
PHXII04:MOVING CHARGES AND MAGNETISM

363039 A metallic wire is folded to form a square loop of side ' \(a\) '. It carries a current ' \(i\) ' and is kept perpendicular to a uniform magnetic field. If the shape of the loop is changed from square to a circle without changing the length of the wire and current, the amount of work done in doing so is

1 \(i B a^{2}(\pi+2)\)
2 \(i B a^{2}(\pi-2)\)
3 \(i B a^{2}\left(\dfrac{4}{\pi}+1\right)\)
4 \(i B a^{2}\left(1-\dfrac{4}{\pi}\right)\)
PHXII04:MOVING CHARGES AND MAGNETISM

363040 A current loop in a magnetic field

1 Can be in equilibrium in one orientation
2 Can be in equilibrium in two orientations, both the equilibrium states are unstable
3 Can be in equilibrium in two orientations, one stable while other is unstable
4 Experiences a torque whether the field is uniform or non-uniform in all orientations
Join With Us for More Updates
PHXII04:MOVING CHARGES AND MAGNETISM

363036 A magentic dipole in a constant magnetic field has

1 Maximum potential energy when the torque is maximum
2 Zero potential energy when the torque is maximum
3 Zero potential energy when the torque is minimum
4 minimum potential energy when the torque is maximum
JEE - 2017
PHXII04:MOVING CHARGES AND MAGNETISM

363037 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
supporting img

1 I \(>\) II \(>\) III \(>\) IV
2 I \(>\) III \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 I \(>\) IV \(>\) II \(>\) III
PHXII04:MOVING CHARGES AND MAGNETISM

363038 A circular current loop of magnetic moment \(M\) is in an arbitrary orientation in an external uniform magnetic field \(\overrightarrow B \). The work done to rotate the loop of \(30^{\circ}\) about an axis perpendicular to its plane is

1 \(\frac{{MB}}{2}\)
2 \(MB\)
3 Zero
4 \(\sqrt 3 \frac{{MB}}{2}\)
KCET - 2019
PHXII04:MOVING CHARGES AND MAGNETISM

363039 A metallic wire is folded to form a square loop of side ' \(a\) '. It carries a current ' \(i\) ' and is kept perpendicular to a uniform magnetic field. If the shape of the loop is changed from square to a circle without changing the length of the wire and current, the amount of work done in doing so is

1 \(i B a^{2}(\pi+2)\)
2 \(i B a^{2}(\pi-2)\)
3 \(i B a^{2}\left(\dfrac{4}{\pi}+1\right)\)
4 \(i B a^{2}\left(1-\dfrac{4}{\pi}\right)\)
PHXII04:MOVING CHARGES AND MAGNETISM

363040 A current loop in a magnetic field

1 Can be in equilibrium in one orientation
2 Can be in equilibrium in two orientations, both the equilibrium states are unstable
3 Can be in equilibrium in two orientations, one stable while other is unstable
4 Experiences a torque whether the field is uniform or non-uniform in all orientations
For More Updates join with Us
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PHXII04:MOVING CHARGES AND MAGNETISM

363036 A magentic dipole in a constant magnetic field has

1 Maximum potential energy when the torque is maximum
2 Zero potential energy when the torque is maximum
3 Zero potential energy when the torque is minimum
4 minimum potential energy when the torque is maximum
JEE - 2017
PHXII04:MOVING CHARGES AND MAGNETISM

363037 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
supporting img

1 I \(>\) II \(>\) III \(>\) IV
2 I \(>\) III \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 I \(>\) IV \(>\) II \(>\) III
PHXII04:MOVING CHARGES AND MAGNETISM

363038 A circular current loop of magnetic moment \(M\) is in an arbitrary orientation in an external uniform magnetic field \(\overrightarrow B \). The work done to rotate the loop of \(30^{\circ}\) about an axis perpendicular to its plane is

1 \(\frac{{MB}}{2}\)
2 \(MB\)
3 Zero
4 \(\sqrt 3 \frac{{MB}}{2}\)
KCET - 2019
PHXII04:MOVING CHARGES AND MAGNETISM

363039 A metallic wire is folded to form a square loop of side ' \(a\) '. It carries a current ' \(i\) ' and is kept perpendicular to a uniform magnetic field. If the shape of the loop is changed from square to a circle without changing the length of the wire and current, the amount of work done in doing so is

1 \(i B a^{2}(\pi+2)\)
2 \(i B a^{2}(\pi-2)\)
3 \(i B a^{2}\left(\dfrac{4}{\pi}+1\right)\)
4 \(i B a^{2}\left(1-\dfrac{4}{\pi}\right)\)
PHXII04:MOVING CHARGES AND MAGNETISM

363040 A current loop in a magnetic field

1 Can be in equilibrium in one orientation
2 Can be in equilibrium in two orientations, both the equilibrium states are unstable
3 Can be in equilibrium in two orientations, one stable while other is unstable
4 Experiences a torque whether the field is uniform or non-uniform in all orientations
NEET DIGITAL LIBRARY
PHXII04:MOVING CHARGES AND MAGNETISM

363036 A magentic dipole in a constant magnetic field has

1 Maximum potential energy when the torque is maximum
2 Zero potential energy when the torque is maximum
3 Zero potential energy when the torque is minimum
4 minimum potential energy when the torque is maximum
JEE - 2017
PHXII04:MOVING CHARGES AND MAGNETISM

363037 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
supporting img

1 I \(>\) II \(>\) III \(>\) IV
2 I \(>\) III \(>\) II \(>\) IV
3 III \(>\) IV \(>\) I \(>\) II
4 I \(>\) IV \(>\) II \(>\) III
PHXII04:MOVING CHARGES AND MAGNETISM

363038 A circular current loop of magnetic moment \(M\) is in an arbitrary orientation in an external uniform magnetic field \(\overrightarrow B \). The work done to rotate the loop of \(30^{\circ}\) about an axis perpendicular to its plane is

1 \(\frac{{MB}}{2}\)
2 \(MB\)
3 Zero
4 \(\sqrt 3 \frac{{MB}}{2}\)
KCET - 2019
PHXII04:MOVING CHARGES AND MAGNETISM

363039 A metallic wire is folded to form a square loop of side ' \(a\) '. It carries a current ' \(i\) ' and is kept perpendicular to a uniform magnetic field. If the shape of the loop is changed from square to a circle without changing the length of the wire and current, the amount of work done in doing so is

1 \(i B a^{2}(\pi+2)\)
2 \(i B a^{2}(\pi-2)\)
3 \(i B a^{2}\left(\dfrac{4}{\pi}+1\right)\)
4 \(i B a^{2}\left(1-\dfrac{4}{\pi}\right)\)
PHXII04:MOVING CHARGES AND MAGNETISM

363040 A current loop in a magnetic field

1 Can be in equilibrium in one orientation
2 Can be in equilibrium in two orientations, both the equilibrium states are unstable
3 Can be in equilibrium in two orientations, one stable while other is unstable
4 Experiences a torque whether the field is uniform or non-uniform in all orientations