Cause of heat production in a current carrying conductors is:
Correct answer: C. Collision of free electrons with atoms or ions of conductor
- A. Collisions of free electrons with one another
- B. High drift speed of free electrons
- C. Collision of free electrons with atoms or ions of conductor
- D. High resistance value
Explanation
When an electric current flows through a conductor, it is primarily due to the movement of free electrons. These free electrons collide with the lattice structure of atoms or ions within the conductor. As a result of these collisions, the kinetic energy of the electrons is transferred to the lattice, leading to an increase in the internal energy and temperature of the conductor. The process of collisions between free electrons and atoms or ions is responsible for the generation of heat in the conductor, and it is known as Joule heating. It can be described by the formula:Q=I2RT
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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