Exam 12: Electric Current and Related Variables in Engineering

The flow of electric charge that occurs in one direction that is typically produced by batteries is known as A)ac current. B)dc current. C)ac/dc current. D)unidirectional current.

In all batteries, electricity is produced by

A common unit of illumination intensity is called a footcandle and is equal to

The law that states that at any given time, the sum of the currents entering a node must equal the sum of the currents leaving the node is known as

The ratio of how much light is produced by a lamp (in lumens) to how much energy is consumed by the lamp (in Watts) is known as

A numbering system that describes the size of an electric conductor is AWG. What does AWG stand for?

If No. 26 wire has a diameter of approximately 0.016 centimeters, what is the diameter of No. 20 in centimeters?

The flow of electric charge that periodically reverses direction that is typically produced by rotating generators is known as

The distribution of light on a horizontal surface is known as

Which subatomic particle has no charge?

Electrical resistance is a fundamental dimension.

In general, there are two ways in which the sun's energy is converted into electricity:

Ohm's law describes the relationship between voltage, resistance, and current. Which of these is Ohm's law? a. $V = \frac { R } { I }$ b. $V = \frac { I } { R }$ c. $V = I R$ d. $R = V I$

Voltage is sometime referred to as emf. What does emf stand for?

In certain circuits, if one of the elements fails, that failure prevents the current from flowing through other elements in the circuit; thus the entire circuit fails. This type of circuit is a

Electrical components that store energy on two oppositely charged electrodes, rather than through a chemical reaction, are known as

Opposite charges repel each other and like charges attract each other.

Primary cells are batteries that can be recharged while secondary cells are batteries that cannot be recharged.

When it comes to wire size, the larger the gage number, the larger the wire diameter.

The electrical resistance of a material varies with temperature.