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Class 12 Physics Practice Test: Torque on Current Loop & Magnetic Dipole
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Class 12 Physics Practice Test: Torque on Current Loop & Magnetic Dipole
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10 Questions

1. ‘X’ is the product of the pole strength of either magnetic pole and the magnetic length of the magnetic dipole. Identify X.
2. Identify the factor on which the torque on a planar current loop does not depend.
3. ‘X’ is the product of the pole strength of either magnetic pole and the magnetic length of the magnetic dipole. Identify X.
4. Give the SI unit of magnetic pole strength.
5. What torque acts on a 50 turn coil of 200 cm2 area carrying a current of 20 A held with its axis at right angles to a uniform magnetic field of 0.2T?
6. Give the SI unit of magnetic dipole moment.
7. What is the maximum torque on a rectangular coil of area 4 cm × 80 cm of 400 turns, when carrying a current of 103 A in a magnetic field of 0.2 T?
8. What torque acts on a 50 turn coil of 200 cm2 area carrying a current of 20 A held with its axis at right angles to a uniform magnetic field of 0.2T?
9. Under which of these conditions, the torque acting on the current carrying loop is minimum?
10. Give the SI unit of magnetic pole strength.

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