A 22.0 cm diameter coil consists of 29 turns of cylindrical copper wire 2.20 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of T/s. Determine the current in the loop in milli-amps (the resistivity for copper is Ω.m).

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.