Q15.A wire 𝑋 of length 50 cm carrying a current of 2 A is placed parallel to a long wire 𝑌 of length 5 m. The wire 𝑌 carries a current of 3 A. The distance between two wires is 5 cm and currents flow in the same direction. The force acting on the wire 𝑌 is : (1) 1 . 2 × 10-5 N directed towards wire 𝑋. (2) 1 . 2 × 10-4 N directed away from wire 𝑋. (3) 1 . 2 × 10-4 N directed towards wire 𝑋. (4) 2 . 4 × 10-5 N directed towards wire 𝑋.
What This Question Tests
This question requires calculating the force between two parallel current-carrying wires using the appropriate formula and determining the direction of the force based on current directions.
Concepts Tested
Formulas Used
F/L = (μ₀I₁I₂)/(2πd)
Force on one wire due to other = F = (μ₀I₁I₂L)/(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?
4.5 — What Is The Magnitude Of Magnetic Force Per Unit Length On A Wire
Physics Class 11 · Chapter 4
4.5 What is the magnitude of magnetic force per unit length on a wire carrying a current of 8 A and making an angle of 30º with the direction of a uniform magnetic field of 0.15 T?
📋 Question Details
- Chapter
- Magnetic Effects of Current
- Topic
- Force between parallel currents
- Year
- 2022
- Shift
- 29 Jul Shift 2
- Q Number
- Q15
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 4: Moving Charges and Magnetism
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