Fields
A region of influence in space where specific types of matter or waves can exert forces on other types of matter or waves
What is a field?
This "rule" determines the direction of current flowing through a wire creating a magnetic field
What is the "Right Hand Rule"?
Einstein correctly predicted that gravity (and therefore a gravitational field) would have an affect on this
What is radiation?
The regenerative brakes in a Tesla are really this
What is a generator?
Cause of gravitational field
What is mass?
A changing magnetic flux passing through a coil of wire creates this
What is an electric current?
A mathematical measure of how much magnetic field passes through a coil of wire.
What is magnetic flux?
This is a generator "running" in reverse
What is an electric motor?
Electric charges are affected by this field
What is an electric field?
According to Ampere's Law, the strength of a magnetic field is what to the current
What is proportional?
When current flows through a wire, this is created
What is a magnetic field?
Assuming that I keep the number of coils constant, this would increase the induced current in an electric generator
What is increase the rate of spin of the coil?
Current-carrying wires cause this field
What is a magnetic field?
According to Ampere's Law, the strength of the magnetic field in a coil of wire is proportional to the current and this
What is the number of loops, or turns, in the coil?
When drawing a magnetic field, the lines from the "North" (or positive) end of the magnet point which direction?
What is out or outward?
Simple transformers have no moving parts; they do this to step up or step down the output voltage
What is increase or decrease the number of turns in the secondary coil?
Radiation is affected by this field
What is a gravitational field?
According to Faraday's Law, the number of turns in the coil and the rate of change of the magnetic flux is proportional to
What is the strength of the induced current?
Of the three types of fields we studied, one of Campbell's permanent magnet produces this field most strongly
What is the magnetic field?
Because generator coils rotate in a magnetic field, the electricity produced by the power company and fed into our homes is this type
What is alternating current (AC)