Q21.Three straight parallel current carrying conductors are shown in the figure. The force experienced by the middle conductor of length 25 cm is: (1) 3 × 10−4 N toward right (2) 6 × 10−4 N toward right (3) 9 × 10−4 N toward right (4) Zero
What This Question Tests
This question requires calculating the net magnetic force on a current-carrying conductor due to two other parallel current-carrying conductors, applying the formulas for magnetic field and force, and considering directions.
Concepts Tested
Formulas Used
B = μ₀I / (2πr)
F = ILBsinθ
📚 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.
4.6 — 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?
📋 Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Force between Parallel Currents
- Year
- 2014
- Shift
- 11 Apr Online
- Q Number
- Q21
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
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