NEET > Physics Class 12 > Eddy Currents - 1
Eddy Currents - 1 Video Lecture - Physics Class 12 - NEET
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FAQs on Eddy Currents - 1 Video Lecture - Physics Class 12 - NEET
| 1. What are eddy currents? |  |
Ans. Eddy currents are circular currents that are induced in a conductor when it is exposed to a changing magnetic field. These currents flow in closed loops and can cause heating and energy losses in the conductor.
| 2. How are eddy currents generated? | |
Ans. Eddy currents are generated when a conductor is exposed to a changing magnetic field. This changing magnetic field can be created by either moving a magnet near the conductor or by changing the magnetic field strength.
| 3. What are the applications of eddy currents? | |
Ans. Eddy currents have various applications in different industries. Some common applications include non-destructive testing (such as detecting cracks in metal), electromagnetic braking systems, induction heating, and magnetic levitation systems.
| 4. How do eddy currents cause energy losses? | |
Ans. Eddy currents cause energy losses in conductors due to their resistance. When eddy currents flow, they encounter resistance in the conductor, which leads to the conversion of electrical energy into heat. This heat generation results in energy losses.
| 5. Can eddy currents be beneficial in any way? | |
Ans. Yes, eddy currents can be beneficial in certain applications. For example, in induction heating, eddy currents are intentionally generated to heat up a metal object for various purposes, such as cooking or metallurgical processes. Additionally, eddy current brakes use the repulsion force generated by eddy currents to provide smooth and efficient braking in some transportation systems.
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