Olympiad workbookNSEPMagnetic Effects of Current
What is the magnetic induction B at the centre O of the semicircular arc if a current carrying wire has shape of an hair pin as shown in figure? The radius of the curved part of the wire is R , the linear parts are assumed to be very long.
Options
- AB = ₀ I 4 R (2+ )
- BB = ₀ I 4 R (2+ )
- CB = 3 ₀ I 4 R (2+ )
- DB = ₀ 4 2 I R
Correct answer
A. B = ₀ I 4 R (2+ )
Step-by-step solution
No solution