An Uncharged Capacitor and a Resistor Are Connected in Series

question 86

Multiple Choice

An uncharged capacitor and a resistor are connected in series to a battery as shown. If ε = 15 V, C = 20 μF, and R = 4.0 × 10⁵ Ω, the time constant of the circuit is approximately

• A) 10 s.
• B) 8.0 s.
• C) 18 s.
• D) 4.0 s.
• E) 2.5 s.

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