2. a 12. 0 �ω resistor is connected in series with a 1.75 �� capacitor and a battery with ��� 13.50 �. before the switch is closed at time � = 0 �, the capacitor is uncharged. (a) what is the time constant? (b) what fraction of the final charge �k is on the capacitor at � = 48.5 �? (c) what fraction of the initial current �r is still flowing at � = 48.5 �?

What we have?

a) We obtain the time constant

b) We have the time and this time is t=48.5s

With the charge on capacitor Q(t) whe can calculate the final charge, so

Through the relation

We conclude that the fraction of final charge Qf is on the capacitor at t=48.5s is 0.9

c) To calculate the current we have,

The fraction of the initial current I:0 is still flowing at t=58.5 is 0.099

there was no answer choices but i think its representative

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge