https://docs.google.com/document/d/1jmnoquHeRHh5rzW8vzUQrM9UKfZKIfKz/edit?usp=sharing&ouid=109695707892755187681&rtpof=true&sd=true

7 4) Instead of switching the battery's voltage polarity manually let us automate it! On the top right select the AC voltage source. An AC voltage source makes the current change direction by alternating the voltage between 10 V and -10 V. Set the horizontal frequency to about 75%-80%. Take a screenshot and paste it below: 5) In both cases you see the same result! Explain in both cases, with the DC voltage and AC voltage, why does this happens to the needle? Explain in terms of the direction of the magnetic field lines