Spoiler summary: The loop inductance of a circular loop is about 25nH per inch of circumference. Remember: before you start using rules of thumb, be sure to read the Rule of Thumb #0: Use rules of ...

If you bend the wire into a loop, the magnetic-field lines will bend with it, forming a toroid, or doughnut shape. In this case, your thumb points in the north direction of the magnetic field ...

Likewise, a wire passing through a magnetic field creates an ... which increases the field still further. This self-sustaining loop is known as the geomagnetic dynamo. Energy is needed to keep ...

The magnetic field around a circular loop of wire is similar to that of a bar magnet. When an electric current flows through the loop, it generates a magnetic field. Inside the loop, the magnetic ...

Likewise, a wire passing through a magnetic field creates an ... which increases the field still further. This self-sustaining loop is known as the geomagnetic dynamo. Energy is needed to keep ...

such as a wire, is placed in a moving magnetic field, an electric field is created in the conductor. We call this magnetic induction. If the conductor is formed into a loop, an electric current ...

It actually doesn't matter about the orientation of the loop. As long as the magnetic field is constant (constant in space, not time), there will be no net force on the wire with current.

I had cause to demonstrate the magnetic field around a wire, and ended up with an 8A current in a vertical wire, battling with the Earth’s magnetic field. My borrowed idea was to put a ring of eight ...

But that won’t generate propulsion in space. When electricity flows through a wire loop in the presence of Earth’s magnetic field, the field will exert a force in one direction on one side of ...

How the universe got its large magnetic fields has remained one of the stickiest ... but-wide-scale electrical current, like a copper wire 1,000 light-years across. Because the filtering of ...