AIIMS 2003
- Exam
- AIIMS
- Year
- 2003
- Subject
- Physics
- Chapter
- Magnetic Effects of Current
AIIMS 2003 · Physics · Magnetic Effects of Current
A rectangular loop carrying a current i_1 , is situated near a long...
A rectangular loop carrying a current , is situated near a long straight wire carrying a steady current . The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the
figure. Then the current loop will
Options
- Amove away from the wire
- Bmove towards the wire
- Cremain stationary
- Drotate about an axis parallel to the wire.
Correct answer
B. move towards the wire
Step-by-step solution
As two like currents attract and unlike currents repel each other, the wire will attract the side of the loop near the wire and parallel to it and the far side of the loop again parallel to the wire will be repelled. But the force of attraction will be more as that side of the loop is closer to the wire and so effectively the current loop will more towards the wire.