Question

Question for the Magnetic field experiment.

Before the start of each trial, the magnetic field sensor was zeroed. However, a zero error was still noticeable in each graph. What external source could create this large, ever-present systematic error? Why?

Answer 1

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of molten iron in the Earth's outer core. These convection currents are caused by heat escaping from the core, a natural process called a geodynamo. The magnitude of the Earth's magnetic field at its surface ranges from 25 to 65 microteslas. This earth's magnetic field is the external source that could create this large, ever-present systematic error.