Physics Magnetism: Ring Behavior When Switch is Closed

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SUMMARY

The discussion focuses on the behavior of a golden ring in a magnetic field when a switch is closed in a circuit involving a rheostat. When the slide contact of the rheostat is kept at point A, the resistance decreases, leading to an increase in current; however, the golden ring remains stationary due to the balance of forces acting on it. The effects of moving the contact from A to B and oscillating it between A and B at 1 Hz are also explored, emphasizing the principles of induced current and magnetic fields as described by Faraday's Law.

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  • Understanding of Faraday's Law of Electromagnetic Induction
  • Knowledge of circuit components, specifically rheostats and their function
  • Familiarity with concepts of magnetic fields and induced current
  • Basic principles of oscillation and frequency in electrical circuits
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  • Investigate the effects of oscillating currents on magnetic fields
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Homework Statement



http://upload.lsforum.net/users/public/c7843Untitleda235.jpg

when the switch is closed
what happen to the golden ring when the switch is closed? explain

the switch remains closed. what happen to the ring if the slide contact of the rheostat
i) is kept at A
ii) moves from A to B
iii) oscillates to and fro between A and B continuously with 1 Hz ?

explain the aboves

Homework Equations


it is a theorem about induced current

The Attempt at a Solution


i am wondering when it contact at A the resistance decreases, so the current increases of circuit, then y the golden ring remain stationary?
 
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