MisConceptual Question 21.05 Part A A bar magnet is held above the floor and dro

Question

MisConceptual Question 21.05 Part A A bar magnet is held above the floor and dropped (Figure 1). In case (a), the magnet falls through a wire loop. In case (b), there is nothing between the magnet and the floor. If there is induced current, wouldnt that cost energy? Where would that energy come from in case (a)? Induced current doesn't need energy There is less kinetic energy in case (a) than in case (b). There is more gravitational potential energy in case (a) than in case (b). Energy conservation is violated in case (a). Submit My Answers Give Up Figure 1 of1 Wire loop

Explanation / Answer

Ans: b) There is less kinetic energy in case a

Due to gravity magnet falls down. If loop is present , current will be induced due to change of flux . The induced current opposes the flow of magnet. That is why kinetic energy willl decrese.

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---