Search any question & find its solution
Question:
Answered & Verified by Expert
Two long parallel wires are at a distance apart. They carry steady equal currents flowing out of the plane of the paper, as shown. The variation of the magnetic field along the line is given by
Options:
- A
- B
- C
- D
Solution:
2246 Upvotes
Verified Answer
The correct answer is:
If the current flows out of the paper, the magnetic field at points to the right of the wire will be upwards and to the left will be downwards, as shown in the figure.
Now, let us come to the problem.
Magnetic field at C = 0
Magnetic field in region BX' will be upwards (+ve) because all points lying in this region are to the right of both the wires.
Magnetic field in region AC will be upwards (+ve), because points are closer to A, compared to B. Similarly magnetic field in region BC will be downwards (-ve).
This graph satisfies all these conditions. It is correct answer
Now, let us come to the problem.
Magnetic field at C = 0
Magnetic field in region BX' will be upwards (+ve) because all points lying in this region are to the right of both the wires.
Magnetic field in region AC will be upwards (+ve), because points are closer to A, compared to B. Similarly magnetic field in region BC will be downwards (-ve).
This graph satisfies all these conditions. It is correct answer
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.