Question

In Figure, after closing switch $S$, what is the change in current flowing through $A$? The battery is ideal :

• A. No change
• B. Decreases
• C. Increases
• D. Cannot say

Answer 1

Answer: (A)

No change

All the four resistances are in parallel to $E$. So current in them flows independently. current in every resistance is $=\frac{E}{R_{individual}}$

after closing the switch neither emf changes nor individual resistance value changes that's why current remains same every time.

Hence, no change in current flowing in $A$ after closing the switch.