Physics

Problem

An RC flash-charging circuit is designed to have a time constant of

3.0\,\text{s}

. If the charging resistor has a resistance of

1.2\,\text{M}\Omega

, what is the required capacitance? a)

3.6\,\mu\text{F}

0.28\,\mu\text{F}

2.5\,\mu\text{F}

2.5\,\text{nF}