$[-/5$ Points$]$

An uncharped series RC circuit is to be connected across a battery. For each of the following changes, determine whether the time for the capacior to reach sow of iss final charpe mad increas, decrase,

Stori HCQHE or remain uncharged.

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$($a$)$ The AC time constant $r$ is endied.

The charging time increases.

The charging time decreases.

The charging time remains the same.

$($b$)$ the battery vollagetis sodied.

The charging time increases.

The charging time decreases.

The charging time remains the ume.

$($c$)$ A second rigitor is adject in wher with the shoinal resistor

The charging time increases.

The charging time decreases.

The charging time remains the same.