An RC Circuit Consists of a Resistor with Resistance 1

question 90

Multiple Choice

An RC circuit consists of a resistor with resistance 1.0 k,a 120-V battery,and two capacitors,C₁ and C₂,with capacitances of 20.0 µF and 60.0 µF,respectively.Initially,the capacitors are uncharged;and the switch is closed at t = 0 s.
-What is the time constant of the circuit?

• A)1.0 × 10^-² s
• B)2.0 × 10^-² s
• C)6.0 × 10^-² s
• D)8.0 × 10^-² s
• E)3.0 × 10^-¹ s

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