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 ...

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 ...

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 ...

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 ...

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 ...

it produces a magnetic field in a circle around the wire, while if you bend the current-carrying wire into a loop or coil, you create a magnetic field inside. As it turns out, this goes both ways ...

The changing electric current in one wire makes a changing magnetic field. This changing magnetic field then induces an electric current in another loop. Also, the more loops you have (in both ...

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 ...