Please use the following link, under the pickup Coil tab. Use three coils. https
ID: 1659710 • Letter: P
Question
Please use the following link, under the pickup Coil tab. Use three coils.
https://phet.colorado.edu/en/simulation/faraday
https://phet.colorado.edu/en/simulation/faraday
you must download this and you will see a pickup COIL tab!
18.
There is no battery in this simulation. Move the magnet with the N pole toward the loops (coils) connected to the light bulb until the N pole barely passes the loops. What happens to the light bulb? (2 points)
19.
What creates the electric current in the loops? (2 points)
20.
What is the direction of the current when the magnet moves toward the loops with the N pole facing the loops? (1 point)
21.
What is the direction of the current when after passing through the loops the magnet moves away from the loops with the S pole facing the loops? (1 point)
22.
What is the direction of the current when the magnet moves away from the loops with the N pole facing the loops? (1 point)
23.
What is the direction of the current when after passing through the loops the magnet moves toward the loops with the S pole facing the loops? (1 point)
24.
What changes when the magnet moves toward or away from the loops? (2 points)
A. Nothing. B. The light bulb lights up only when the magnet is moving toward or away from the loops. C. The light bulb stays lit all the time.Explanation / Answer
Whenever magnetic flux associated with a loop changes, current is induced in the loop which inturn resists the cause changing flux. So, whenever magnet moves towards or away from the loop, induced current flows in such a way to oppose the magnetic field of the magnet e.g, when magnet moves with N pole facing the loops, the induced current produces an effective north pole(By flowing in anticlockwise direction) to oppose the bar's magnetic field(Lenz's law).
18. B
19. B
20. A
21. B
22. A
23. A
24. B