Question
The straight wire A B carries a current I. The ends of the wire subtend angles _1 and _2 at the point P as shown in figure. The magnetic field at the point P is
BITSAT
Physics
Magnetic Effects of Current
2024
BITSAT 2024 (Memory Based Paper 3)
BITSAT Physics Question (2024) — Solution
Options
- A. _0 I 4 d ( _1- _2 )
- B. _0 I 4 d ( _1+ _2 )
- C. _0 I 4 d ( _1- _2 )
- D. _0 I 4 d ( _1+ _2 )
Answer
A. _0 I 4 d ( _1- _2 )
Step-by-step solution
The magnetic field at a point P due to a current carrying straight wire, such that the ends of the wires, makes angle and (see figure) is given by B= _0 I 4 d ( - ) where, d is the distance between the point P and wire. In the given problem, = _1 and = _2 B= _0 I 4 d ( _1- _2 )
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