Electronics 2

What is the total resistance in a series circuit with resistors R1, R2, and R3?

• R1 + R2 + R3

• 1/(1/R1 + 1/R2 + 1/R3)

• • R1/R2/R3

• • R1 - R2 - R3

In a parallel circuit, if one resistor is removed, what happens to the total resistance?

• It increases

• It becomes infinite

• It decreases

• It remains the same

What is the primary function of a potentiometer?

• To increase voltage

• To adjust resistance

• To convert AC to DC

• To store energy

Which of the following statements about a potentiometer is true?

• • It can only be used to control current.

• • It provides a variable voltage output.

• • It is a type of fixed resistor.

• • It cannot be used in audio applications.

If an LED is connected in reverse bias, what will likely happen?

• • It will blink after a particular amount of time.

• • It will produce sound.

• • It will get damaged.

• • It will function normally.

What will happen if 1 switch is left open?

• No Led will glow.

• 1 Led will glow.

• 2 Leds will glow.

• Every led will glow.

What happens to the total current in a series circuit if the voltage source is increased?

• • Current decreases

• • Current remains constant

• • Current increases

• • Current fluctuates

Which of the following can be used as an output device to produce sound in an electronic project?

• • Resistor

• Capacitor

• 7-Segment Display

• Buzzer

What is the main advantage of using parallel circuits over series circuits?

• • Increased resistance

• • If one component fails, others still operate

• • All components share the same current

• • Lower total voltage requirement

How many terminals does a Buzzer have?

• 1

• 2

• 3

• 4