EmSAT Achieve Exam > EmSAT Achieve Videos > Physics for EmSAT Achieve > Understanding Magnetic Flux
Understanding Magnetic Flux Video Lecture | Physics for EmSAT Achieve
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FAQs on Understanding Magnetic Flux Video Lecture - Physics for EmSAT Achieve
| 1. What is magnetic flux? |  |
Ans. Magnetic flux is a measure of the total magnetic field passing through a given area. It is represented by the symbol Φ and is calculated as the product of the magnetic field strength and the perpendicular area it passes through.
| 2. How is magnetic flux different from magnetic field strength? | |
Ans. Magnetic flux is a measure of the total magnetic field passing through a given area, while magnetic field strength refers to the force that a magnetic field exerts on a moving charged particle. In essence, magnetic flux quantifies the magnetic field passing through a surface, whereas magnetic field strength measures the intensity of the field at a specific point.
| 3. What factors affect the magnetic flux through a surface? | |
Ans. The magnetic flux through a surface is affected by the strength of the magnetic field, the angle at which the field lines intersect the surface, and the area of the surface. A greater magnetic field strength, a larger intersecting area, and a perpendicular orientation of the field lines will result in a higher magnetic flux.
| 4. How is magnetic flux related to Faraday's Law of electromagnetic induction? | |
Ans. Faraday's Law states that the induced electromotive force (emf) in a closed circuit is directly proportional to the rate of change of magnetic flux through the circuit. This law demonstrates the relationship between magnetic flux and the generation of an emf, illustrating how a changing magnetic field induces an electric current.
| 5. Can magnetic flux be negative? | |
Ans. Yes, magnetic flux can be negative if the magnetic field lines pass through the surface in the opposite direction to the chosen positive direction. This indicates a decrease in the magnetic field passing through the surface, resulting in a negative value for magnetic flux.
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Dec 22, 2024 Last updated |
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