need second opinion and clear explanation please help answer every part of this
ID: 1402337 • Letter: N
Question
need second opinion and clear explanation please help answer every part of this question. I am very confused still
We did a lab on AC fields and in this section of the lab, a coil with N = 800 turns was used and clamped to a ring stand. Then a magnet wand was shaked back and forth through the coil and the relationship between maximum voltage across the coil and maximum speed of the magnet across the coil was observed. We observed that the faster you shake the magnet wand the higher the voltage with large peaks and high amplitudes. Then we Slided the clear end of the magnet wand into the coil and holded the black magnet end just above the top of the coil and then dropped the wand through the coil. Then we Inserted the clear end of the magnet wand into the coil so that about half of the wand was above the coil and then we dropped the wand again through the coil as shown in figure 1:
Explain why the voltage “pulses” before and after the zero-crossing were asymmetric. This was especially noticeable in the trial in which the magnet was held just above the coil’s opening. What would be different about the data if we had used a coil with N = 200-turns?
The graphs for dropping the wand first time and then second time through the coil is shown below: The graph shows Voltage Vs time graph
Magnet Wand Clamp "Voltage Sensor" Coil Tripod Stand Channel A A BC 1 2 3 4 Output Data Studio InterfaceExplanation / Answer
EMF or voltage is produced because of change in the magnetic flux with respect to time. Here magnet is situtated just above the top of the coil ( as shown in figure ). So when it enetrs into the coil , the intesity of magnetic field is low as compared to when it leaves from the coil because at that time whole magnet was inside the coil and it produced more magnetic field as compared when it was entering the coil. and emf thus genrated depends on the change of the magnetic field.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.