Ques: What happens when a conductor carrying an electric current is placed in a magnetic field ?
What happens when a current carrying conductor is placed in a uniform magnetic field?
Ans: When a conductor carrying an electric current is placed in a magnetic field, a mechanical force is experienced by it, which can make the conductor move.
The magnitude of the force depends upon the angle between IL and B
Ques 3: What is the force on current carrying loop in the uniform magnetic field?-What happens when a current carrying conductor is placed in a uniform magnetic field?-12
Ans: When a current carrying loop is placed in a uniform magnetic field, it will experience a force in the form of a couple. The moment of this couple is the torque. Thus, the uniform magnetic field exerts a torque on the current carrying loop given by
What is Coulomb’s law of magnetism?-What happens when a current carrying conductor is placed in a uniform magnetic field?-12
There exists a force of attraction or repulsion between the two magnetic poles of strength m1 and m2 separated through a distance d is
Define magnetic pole strength. What is its unit?
Ans: The pole strength of each pole is measured in Ampere-meter (amp-m).
Thus, the magnetic pole strength of a magnetic pole is said to be 1 Ampere- meter, when it attracts another unlike pole of same pole strength with a force of 10-7 N placed in vacuum at a distance of 1 meter from it.
Ques: What is magnetic dipole moment? Give its units.
Ans: The strength of a magnetic dipole is expressed in terms of a physical quantity called a Magnetic Dipole Moment whose magnitude is represented by the product of the strength of either pole and the length of the magnet M = m (2L) and the direction is from S-pole to N-pole of the magnet
The SI unit of magnetic dipole moment is Ampere-meter² (A m²)
Ques: What is the expression of the magnetic moment of an electron due to its orbital motion?
Ans: The magnetic dipole moment of an electron revolving around the nucleus in the nth orbit is
Ques: Define Bohr magneton. What is its value?-What happens when a current carrying conductor is placed in a uniform magnetic field?-12
Ans: Bohr Magneton is defined as the magnetic dipole moment of the electron in the orbit corresponding to n=1 in a hydrogen atom and it is the minimum value of the magnetic dipole moment possessed by the electron in the hydrogen atom. Thus,
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