Q19.Two wires A & B are carrying currents I1 and I2 as shown in the figure. The separation between them is d . A third wire C carrying a current I is to be kept parallel to them at a distance x from A such that the net force acting on it is zero. The possible values of x are: (1) x = ± and x = I2 d (I1−I2) (I1−I2) I1d (2) x = ( I1+I2I1 )d (3) x = ( I1+I2I2 )d and x = ( I1−I2I2 )d (4) x = ( I1−I2I1 )d and x = (I1+I2)I2 d
What This Question Tests
The question requires calculating the magnetic forces exerted by two wires on a third wire and finding positions where these forces cancel out. It involves considering different possible locations for the third wire relative to the first two.
Concepts Tested
Formulas Used
F/L = (μ₀ I₁ I₂) / (2πd)
📚 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 current-carrying wires
- Year
- 2019
- Shift
- 10 Apr Shift 1
- Q Number
- Q19
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 4: Magnetic Effects of Current
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