Current, Voltage, Resistance

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

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

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

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 typical use of a resistor in a circuit is to limit the amount of:

• Voltage

• Current flow

• Wattage

The schematic symbol for the __________ is shown below.

• Fixed resistor

• Potentiometer

• Rheostat

The schematic symbol for the __________ is shown below.

• power source

• terminal

• capacitor