Loading [MathJax]/jax/output/HTML-CSS/jax.js


1)

In the given circuit diagram, when the current reaches a steady state in the circuit, the charge on the capacitor of capacitance C  will be

  20102019967_capa.JPG


A) CEr1(r2+r)

B) CEr2(r+r2)

C) CEr1(r1+r)

D) CE

Answer:

Option B

Explanation:

In steady-state , no current flow through the capacitor, So, resistance becomes ineffective.

   So, the current in circuit

   I=Er+r2(TotalResistance)

   Potential drop  across capacitor

                             = Potential drop across r2 =I r2Er2r+r2

         Stored charge of capacitor . Q= CV

                               = CEr2(r+r2)