A bar magnet produces 50 magnetic field lines passing normally through a small square…
PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current
Problem
A bar magnet produces 50 magnetic field lines passing normally through a small square area located at point X and 20 field lines through an equal area located at point Y. Which relation between the magnitudes BX and BY of the magnetic fields at X and Y is correct?
(a) BX=1.5BY
(b) BX=2.5BY
(c) BX=0.4BY
(d) BX=2BY