Q21.A rigid square loop of side ‘a’ and carrying current I2 is lying on a horizontal surface near a long current I1 carrying wire in the same plane as shown in figure. The net force on the loop due to the wire will be: (1) Attractive and equal to μ0I1I2 (2) Repulsive and equal to μ0I1I2 3π 4π μ0I1I2 (3) Repulsive and equal to (4) Zero 2π
What This Question Tests
This question requires calculating the net magnetic force on a square current loop due to a nearby long straight current-carrying wire, involving the determination of forces on parallel and perpendicular segments.
Concepts Tested
Formulas Used
B = (μ₀I) / (2πr)
dF = I (dL × B)
F_net = F_attraction - F_repulsion
📚 NCERT Sections This Tests
4.7 — Two Long And Parallel Straight Wires A And B Carrying Currents Of
Physics Class 11 · Chapter 4
4.7 Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A.
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
- Year
- 2019
- Shift
- 09 Apr Shift 1
- Q Number
- Q21
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
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