EmSAT Achieve Exam > EmSAT Achieve Videos > Physics for EmSAT Achieve > Drift of Electrons- 2
Drift of Electrons- 2 Video Lecture | Physics for EmSAT Achieve
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FAQs on Drift of Electrons- 2 Video Lecture - Physics for EmSAT Achieve
| 1. What is drift of electrons? |  |
Ans. The drift of electrons refers to the movement of electrons in a conductor in response to an electric field. When a potential difference is applied across a conductor, electrons experience a force that causes them to move in a particular direction, which is opposite to the direction of the electric field.
| 2. How does drift of electrons contribute to the flow of electric current? | |
Ans. The drift of electrons is responsible for the flow of electric current in a conductor. When a potential difference is applied, electrons start to move in the direction opposite to the electric field. Although individual electron velocities are random, the net result is a slow drift of electrons in the direction of the electric field, creating a continuous flow of charge or electric current.
| 3. What factors affect the drift velocity of electrons in a conductor? | |
Ans. Several factors affect the drift velocity of electrons in a conductor. These include the magnitude of the applied electric field, the density of free electrons in the conductor, and the presence of any impurities or defects in the conductor's crystal lattice structure. Additionally, the temperature of the conductor also influences the drift velocity, as higher temperatures lead to increased electron collisions, reducing the overall drift velocity.
| 4. How does the drift velocity of electrons relate to the electric current in a conductor? | |
Ans. The drift velocity of electrons determines the magnitude of the electric current in a conductor. The greater the drift velocity, the larger the current flow. However, it's important to note that the drift velocity itself is relatively small, typically on the order of millimeters per second. Despite this, the vast number of electrons in a conductor and their collective movement result in a significant current flow.
| 5. Can the drift velocity of electrons be increased in a conductor? | |
Ans. Yes, the drift velocity of electrons can be increased in a conductor by increasing the applied electric field or reducing the resistance of the conductor. By increasing the potential difference across the conductor or using materials with higher conductivity, the force on the electrons can be strengthened, leading to a higher drift velocity and consequently a larger electric current.
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