EL1 - Wk1 - Pretest 30q

What is the unit of measurement for electrical resistance?

• Volts

• Ohms

• Amperes

Which of the following materials is a good conductor of electricity?

• Rubber

• Wood

• Copper

What does AC stand for in the context of electrical current?

• Alternating Current

• Advanced Circuitry

• Amperage Control

How many volts are typically found in a standard household electrical outlet in the United States?

• 120V

• 220V

• 12V

Which component in an electrical circuit controls the flow of current?

• Capacitor

• Resistor

• Switch

In a simple series circuit, how does adding more resistors affect the total resistance?

• Increases it

• Decreases it

• Has no effect

What is the main function of a diode in an electrical circuit?

• Amplify signals

• Regulate voltage

• Allow current flow in one direction only

What is the SI unit of electrical current?

• Volts

• Watts

• Amperes

What is the relationship between voltage, current, and resistance in Ohm's Law?

• V = IR

• I = VR

• R = IV

Which of the following is an example of a semiconductor material commonly used in electronic devices?

• Aluminum

• Silicon

• Gold