1. Why was the electrometer needed? Why didn't we just connect the oscilloscope directly to the coil?
2. Why is it important to align the coil with north and to make sure that it is level?
3. According to the NOAA website, the expected magnetic field for our area is about 0.47 G. Assuming that value is correct, what is the percent error in the value that you obtained for the total field in your analysis?
1)Electrometers are used in nuclear physics experiments they are able to measure the tiny charges left in matter by the passage of ionizing radiation. An electrometre is also an electrical instruments for measuring electric charge or electric potential difference. Oscilloscope cannot directly connect to the coil because oscilloscopes generally used for voltage probes various current probesalso exist and are commonly used to measure current in circuits they are typically expensive and very depending on passivity and current range.
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