Concept:A current-carrying conductor produces a magnetic field around it, while a moving charge in a magnetic field experiences a force.
Explanation:Statement I is correct because an electric current creates a magnetic field around the conductor, so it behaves like a magnet.
Statement II is incorrect because moving electrons perpendicular to a magnetic field experience a maximum magnetic force.
This force is given by the Lorentz force equation:
F=q(v×B).
Here,
q is the charge,
v is the velocity, and
B is the magnetic field.
When
v is perpendicular to
B, the magnitude of the force is
F=qvB, which is the maximum possible value.
Thus, moving electrons perpendicular to the magnetic field definitely experience a force, not zero force.
Hence, only Statement I is correct.
The direction of the magnetic field around a straight current-carrying conductor can be found using the right-hand thumb rule.
Electromagnets work on this principle that a current-carrying conductor acts like a magnet.
Answer:Statement I only.
Correct option: A. Statement I only.