Question

An uncharged capacitor is connected in series with a resistor and a battery. The charging of the capacitor starts at t=0. The rate at which energy stored in the capacitor:-

Answer 1

first increases then decreases

first decreases constant

continuously decreases

Answer :

A

Solution :

Rate of change of energy =V.I.

Initially hence

finally hence

There will be a maxima of power between these two

Answer 2

Answer:

$\mathtt \pink{\frac { 1 } { C } = \frac { 1 } { C _ { 1} } + \frac { 1 } { C _ { 2 } } + \frac { 1 } { C _ { 3 } } + \cdots + \frac { 1 } { C _ { n } }}$