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Basic Electrical Theory - Chapter 1 Review

Across
Voltmeters are connected in BLANK with the circuit and measure the difference of potential between the two test leads.
Copper and aluminum are the metals most often used for electrical BLANK.
Electric current can be used to alter the effects of BLANK bonding so as to separate or encourage the formation of new compounds.
The BLANK is used to measure very high-resistance values, such as those found in cable insulation.
BLANK lighting is produced when a high resistance tungsten metal filament is heated in a vacuum glass lamp.
Electricity is the transfer of BLANK via the movement of electrons.
Measuring currents larger than 10 mA with a directly connected meter often requires the use of a BLANK, called a "shunt", in parallel with the meter movements coil.
Field intensity increases with increased current flow, but weakens as they get further from the BLANK.
BLANK are used to measure the resistance or opposition to the current flow of a circuit or component.
A BLANK is a power source where voltaic cells are combined in a series arrangement, positive terminal to negative terminal.
Magnetic fields of similar BLANK repel each other when brought close together.
Down
An electromagnetic BLANK is a switch that uses magnetism to open or close a set of contacts.
The operation of an electrical BLANK is opposite that of a motor.
BLANK are used to measure both dc and ac voltage.
The strength of an electromagnetic field is dependent on the magnitude of the BLANK and the number of turns in the electromagnet coil.
For PV systems the BLANK changes dc to ac.
BLANK BLANK means that the contacts are not touching each other when power is not applied to the coil.
When electrons are forced to move through a conductor, the BLANK fields of individual electrons add together.
To force BLANK to move, energy must be applied to them to make them leave their atom.
Electromechanical meters use a coil of wire around a soft core of BLANK.
The electric BLANK works on the principle of the attracting and repelling forces of magnetic fields.
The NEC was created to help ensure the BLANK of persons working with electricity.