A Capacitor Is Connected in Series with a Resistor and a Switch

question 1

Multiple Choice

A capacitor is connected in series with a resistor and a switch. With the switch open, the capacitor is charged to 9.0 V. When the switch is closed, how long will it take for the voltage across the capacitor to drop to 6.0 V if the time constant of the circuit is 4.0 s?

• A) 0.3 s
• B) 1.2 s
• C) 1.6 s
• D) 2.7 s
• E) 12 s

---

Definitions:

Sensorimotor

Relating to or involving both sensory and motor functions or pathways.

Preoperational

A stage in Jean Piaget’s theory of cognitive development where children aged 2 to 7 years old are able to use symbols and language but do not yet understand concrete logic.

Concrete Operational

A stage in Piaget's theory of cognitive development (typically age 7-12) where children gain the ability to think logically about concrete (physical and visible) events.

Ejaculation

Ejaculation is the discharge of semen from the male reproductive tract as a result of sexual arousal.