THE BAR MAGNET The primary origin of magnetism lies in a
Last updated: 6/10/2023
THE BAR MAGNET The primary origin of magnetism lies in a atomic current and intrinsic spin of electrons b polar and non polar nature of molecules c pauli exclusion principle d electronegative nature of materials Magnetic moment for a solenoid and corresponding bar magnet is a equal for both b more for solenoid c more for bar magnet d none of these Which of the following is not correct about the magnetic field lines a The magnetic field lines of a magnet form continuous closed loops b The tangent to the field line at a given point represents the direction of the net magnetic field B at that point the magnetic field B d The magnetic field lines may intersect to each other in certain conditions Which of the following is correct about magnetic monopole Which of the following relationships between Be and B is correct a B 2 BA c B 4 BA 6 A short bar magnet has a magnetic moment of 0 48 JT The magnitude and direction of magnetic field produced by the magnet at a distance of 10 cm from the centre of the magnet on its axis is a 0 48 x 10T along N S direction b 0 28 x 10T along S N direction c 0 28 x 10 T along N S direction d 0 96 x 10T along S N direction c The larger the number of field lines crossing per unit area the stronger is the magnitude of 8 The magnetic induction at a point 1 A away from a proton measured along its axis of spin is magnetic moment of the proton is 1 4 x 10 26 A m a 0 28 mT c 0 028 mT b 28 m d 2 8 T a Magnetic monopole exist b Magnetic monopole does not exist c Magnetic monopole have constant value of monopole momentum d The monopole momentum increase due to increase at its distance from the field b B 2 B d B 4 Bg 7 A short bar magnet has a magnetic moment of 0 39 I T The magnitude and direction of the magnetic field produced by the magnet at a distance of 20 cm from the centre of the magnet on the equatorial line of the magnet is a 0 049 G N S direction b 4 95 G S N direction c 0 0195 G S N direction d 19 5 G N S direction 9 The pole strength of 12 cm long bar magnet is 20 A m The magnetic induction at a point 10 cm away from the centre of the magnet on its axial line is 4x a 1 17 x 10 T c 1 17 x 10 T 107 Hm m b 2 20 x 10 T d 2 20 x 10 T 5 If Be represents equatorial magnetic field and B 10 Two short bar magnets of magnetic moments m represents axial magnetic field due to a bar magnet each are arranged at the opposite corners of a square