Q10.A loop of flexible wire of irregular shape carrying current is placed in an external magnetic field. Identify the effect of the field on the wire. (1) Loop assumes circular shape with its plane normal to the field. (2) Loop assumes circular shape with its plane parallel to the field. (3) Wire gets stretched to become straight. (4) Shape of the loop remains unchanged.
What This Question Tests
This question tests the understanding of how magnetic forces act on a flexible current loop in an external magnetic field, causing it to achieve a configuration of maximum enclosed area (circular shape) and minimum potential energy (plane normal to the field).
Concepts Tested
Formulas Used
F = I(L x B)
U = -M . B
M = IA
📚 NCERT Sections This Tests
4.6 — A 3.0 Cm Wire Carrying A Current Of 10 A Is Placed Inside A Solenoid
Physics Class 11 · Chapter 4
4.6 A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 0.27 T. What is the magnetic force on the wire?
4.4 — A Horizontal Overhead Power Line Carries A Current Of 90 A In East To
Physics Class 11 · Chapter 4
4.4 A horizontal overhead power line carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1.5 m below the line?
4.9 — A Square Coil Of Side 10 Cm Consists Of 20 Turns And Carries A Current
Physics Class 11 · Chapter 4
4.9 A square coil of side 10 cm consists of 20 turns and carries a current of 12 A. The coil is suspended vertically and the normal to the plane of the coil makes an angle of 30º with the direction of a uniform horizontal magnetic field of magnitude 0.80 T. What is the magnitude of torque experienced by the coil?
📋 Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Force on a current carrying conductor in a magnetic field
- Year
- 2021
- Shift
- 18 Mar Shift 1
- Q Number
- Q10
- Type
- Conceptual
- NCERT Ref
- Class 12 Physics Ch 4: Magnetic Effects of Current
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