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

a. Is the current moving around the coils? b. Move the compass near the coils and leave it there. You see the battery voltage is set to 10 V and the current is running around the coils however the needle isn't deflecting Why? Explain in detail in terms of the polarity (the direction of the magnetic field lines) of the observed magnetic field. c. Now, with your cursor move the battery setting for the voltage from 10 V all the way to left side of the battery (this changes the polarity of the battery to - 10 V). What happened to the direction of the current you observe? d. Keep switching manually the battery's voltage polarity couple back times back and forth from 10 V to -10V and observe what happens to the needle