A 1 000-V battery, a 3 000-? resistor, and a 0.50-?F capacitor are connected in series with a switch. The time constant for such a circuit, designated by the Greek letter, ?, 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 ? seconds after the
switch has been closed?
a.
0.14 A
b.
0.21 A
c.
0.12 A
d.
0.32 A
c
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