Q18.Two long parallel wires are at a distance 2 d apart. They carry steady equal current flowing out of the plane of the paper as shown. The variation of the magnetic field along the line XX ' is given by (1) (2) (3) (4)
What This Question Tests
This question requires visualizing the magnetic fields produced by two parallel wires carrying current in the same direction and applying the principle of superposition to determine the resultant field's variation along a specific line.
Concepts Tested
Formulas Used
B = (μ₀ I) / (2πr)
📚 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?
4.8 — A Closely Wound Solenoid 80 Cm Long Has 5 Layers Of Windings Of 400
Physics Class 11 · Chapter 4
4.8 A closely wound solenoid 80 cm long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 1.8 cm. If the current carried is 8.0 A, estimate the magnitude of B inside the solenoid near its centre.
📋 Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Magnetic field of long straight wires
- Year
- 2010
- Shift
- Unknown
- Q Number
- Q18
- Type
- Graph based
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
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