Capacitor

A capacitor is connected to a 20 V battery through a resistance of 10\(\Omega\). It is found that the potential difference across the capacitor rises to 2 V in 1 \(\mu\)s. The capacitance of the capacitor is __________ \(\mu\)F. Given : \(\ln \left( {{{10} \over 9}} \right) = 0.105\)