LZ1ECE523_Chapter2

What is the SI unit of electrical resistance?

• Volts

• Amperes

• Ohms

• Watts

Which component in a circuit controls the flow of electric current?

• Capacitor

• Inductor

• Resistor

• Diode

What does Ohm's Law describe?

• The relationship between voltage and resistance

• The relationship between current and power

• The relationship between voltage, current, and resistance

• The relationship between capacitance and voltage

Which term refers to the force that drives the flow of electric charge?

• Voltage

• Current

• Resistance

• Power

What does an insulator do in an electrical circuit?

• Facilitates the flow of electric current

• Blocks the flow of electric current

• Increases the voltage

• Converts electrical energy into other forms

What is the function of an electrical conductor?

• Stores electrical energy

• Resists the flow of electric current

• Facilitates the flow of electric current

• Generates electric charge

In a basic circuit, what role does an LED play?

• Generates resistance

• Stores electrical charge

• Converts electrical energy into light

• Increases voltage

Which of the following is not a basic component of an electrical circuit?

• Battery

• Resistor

• Transformer

• Capacitor

What happens to the current if the resistance in a circuit is increased while keeping the voltage constant?

• Current increases

• Current decreases

• Current remains constant

• Current becomes zero

What is the primary function of an energy source in a circuit?

• To regulate voltage

• To create resistance

• To initiate and sustain the flow of electricity

• To convert current into voltage