Assertion: coil's field | /r/HasProperty | magnetic
Facets:
Source sentences:
text: When the current passing through changes, as AC currents do, it typically creates a magnetic field in the coil that works against that current.
text: When the current passing through changes, as AC currents do, it typically creates a magnetic field in the coil that works against that current.
text: Inductors have values that typically range from 1 µH (10−6 H) to 20 H. Many inductors have a magnetic core made of iron or ferrite inside the coil, which serves to increase the magnetic field and thus the inductance.
text: This magnetic field causes the voice coil to react to the magnetic field from a permanent magnet fixed to the speaker's frame, thereby moving the cone of the speaker.
text: The coil is placed in the magnetic field to be measured and quickly withdrawn to a region of space with a negligible magnetic field.
text: As the coil is delayed within a magnetic field, then a deflecting torque works upon it.
text: This coil creates a magnetic field which is 90 degrees out of phase and slightly weaker than that of the main coil.
text: When the points were closed, current flowed into the primary side of the coil creating the magnetic field.
text: so the coils are collinear with their magnetic fields opposing, the two fields cancel each other and the inductance is very small.
text: A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator.
text: A more crude search coil also called exploring coil is also used in laboratory experiments in schools to measure the magnetic field in a certain region of space.
text: The reverse is used in a dynamic microphone, where sound vibrations intercepted by something like a diaphragm physically transfer to a voice coil immersed in a magnetic field, and the coil's terminal ends then provide an electric analog of those vibrations.
text: The image above shows two ways in which the voice coil is immersed in the magnetic field.