A capacitor is charged and then made to discharged through a resistance. The time constant is `tau`. In what time will the potential difference across the capacitor decreases by `10%`?

A capacitor charges from a cell through a resistance. The time constant is tau . In what time will the capacitor collect 10% of the final charge?

When a capacitor discharges through a resistance R, the time constant is tau and the maximum current in the circuit is i_0 . Then,

When a capacitor discharges through a resistance R, the time constant is tau and the maximum current in the circuit is i_0 . Then,

At t=0, an inductor of zero resistance is joined to a cell of emf epsilon through a resistance. The current increases with a time constant tau . After what time will the potential difference across the coil be equal to that across the resistance ?

A capacitor is charged to a certain potential and then allowed to discharge through a resistance R. The ratio of charge on the capacitor to current in the circuit

A capacitor is charged to a certain potential and then allowed to discharge through a resistance R. The ratio of charge on the capacitor to current in the circuit