Quiz # 2 Current, Voltage, Resistance, Components

Conventional current theory was the first to be developed. It reasoned that electrical current flows from:

• negative to positive

• positive to negative

• positive to neutral

Electron flow theory states that an overabundance of electrons flows from:

• A negatively charged source to positive

• A negatively charged source to neutral

• A positively charged source to negative

Statement 1.            Voltage can be measured as the potential difference between the two terminals                                     of a battery.

Statement 2.      Electrons move, when a path is available, from a point of excess electrons                                     (higher potential energy) to a point deficient in electrons (lower potential energy).

• Only #1 is true

• Only #2 is true

• Both #1 and #2 are true

____________ is a measurement of a rate at which a charge flows through a conductor.

• Velocity

• Current

• Amplitude

The ______________ of the conductor will determine the amount of current that flows under the given voltage.

• Resistance

• Malleability

• Resiliency

Ohm's law may be expressed as an equation as:

• I = E/R

• E = I/R

• E = R/I

The resistance of a metallic conductor is dependent on:

            1.         the type of conductor material

2.         its length

            3.         the cross-sectional area

            4.         temperature

• 1, 2, 3, 4

• 2, 3, 4

• 1, 3, 4

Statement 1.            Electrical generation commonly known as piezoelectric is a result of the                                               application of mechanical pressure on a dielectric or nonconducting crystal.

 

       Statement 2.     The most common piezoelectric materials used today are crystalline quartz and                                           diamond salt.

• Only #1 is true

• Only #2 is true

• Both #1 and #2 are true.

Tags

NGSS.HS-PS3-3

Chemical energy can be converted into electricity; the most ordinary form of this is the:

• Battery
• Load Cell

• Chemical Generator

Tags

NGSS.HS-PS3-3

The most common source of thermal electricity found in the aviation industry comes from:

• Solar Cells

• Thermocouples

• Thermostats

Tags

NGSS.HS-PS3-4