A 1000-V battery, a 3000-$\Omega$ resistor, and a 0.50-$\mu$F capacitor are connected in series with a switch. The time constant for such a circuit, designated by the Greek letter, $ \tau $, is defined as the time that the capacitor takes to charge to 63% of its capacity after the switch is closed. What is the current in the circuit at a time interval of $ \tau $ seconds after the switch has been closed?
A) 0.14 A
B) 0.12 A
C) 0.32 A
D) 0.21 A

Question

A 1000-V battery, a 3000-$\Omega$ resistor, and a 0.50-$\mu$F capacitor are connected in series with a switch. The time constant for such a circuit, designated by the Greek letter,  $ \tau $, is defined as the time that the capacitor takes to charge to 63% of its capacity after the switch is closed. What is the current in the circuit at a time interval of  $ \tau $ seconds after the switch has been closed? 
A) 0.14 A 
B) 0.12 A 
C) 0.32 A 
D) 0.21 A

Quizplus · Accepted Answer

The Answer of A 1000-V battery, a 3000-$\Omega$ resistor, and a 0.50-$\mu$F capacitor are connected in series with a switch. The time constant for such a circuit, designated by the Greek letter,  $ \tau $, is defined as the time that the capacitor takes to charge to 63% of its capacity after the switch is closed. What is the current in the circuit at a time interval of  $ \tau $ seconds after the switch has been closed? 
A) 0.14 A 
B) 0.12 A 
C) 0.32 A 
D) 0.21 A

A 1000-V Battery, a 3000- Ω\OmegaΩ Resistor, and a 0 μ\muμ F Capacitor Are Connected in Series with a Switch

A 1000-V Battery, a 3000- $\Omega$ Resistor, and a 0 $\mu$ F Capacitor Are Connected in Series with a Switch