Block 4 Direct Current Terms

What is the unit of measure of Current?

• Volt

• Ohm

• Ampere

• Watt

Which component limits the flow of electrical current?

• Capacitor

• Resistor

• Inductor

• Transformer

What is a 3-terminal variable resistor that varies the voltage called?

• Rheostat

• Thermistor

• Potentiometer

• Resistor

What law explains the relationship between voltage, current, and resistance in an electrical circuit?

• Kirchhoff's Law

• Ohm's Law

• Faraday's Law

• Coulomb's Law

What is a remotely actuated, electromechanical switch?

• Switch

• Circuit Breaker

• Relay

• Contactor

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

What term describes the flow of electrical charge (electrons)?

• Voltage

• Current

• Resistance

• Capacitance

Tags

NGSS.HS-PS2-5

What is the measure of the ease with which magnetic flux can penetrate material?

• Conductivity

• Resistance

• Permeability

• Retentivity

What term refers to electrons at rest?

• Current

• Static electricity

• Potential difference

• Kinetic energy

Which materials oppose the movement of electrons and contain 5 to 8 electrons in the valence shell?

• Conductors

• Semiconductors

• Insulators

• Superconductors

What is the unit of measure of Power?

• Volt

• Ohm

• Watt

• Ampere