In the capacitor–resistor network shown in the source diagram, all capacitors are initially uncharged. When switch k is closed at t = 0, find the ratio of the maximum to the minimum current drawn from the battery. The resistive branches are marked 2R in the figure.
Physics · Mixed Chapter
JEE Mains

Question

In the capacitor–resistor network shown in the source diagram, all capacitors are initially uncharged. When switch k is closed at t = 0, find the ratio of the maximum to the minimum current drawn from the battery. The resistive branches are marked 2R in the figure.

Physics · Mixed Chapter

G1 Physics · Accepted Answer

Explanation: At t=0 uncharged capacitors behave as short circuits, whereas for t→∞ they behave as open circuits. Evaluate equivalent resistance across the battery in each state using the diagram. The maximum-to-minimum current ratio is 2 (printed key).