Two sources of equal emf are connected to an external resistance R The internal resistances of he two sources are R1 and R2 ( R2 > R1 ). If the potential difference across the source having internal resistance R2 is zero, then :
As we learnt in
Current given by the cell -
- wherein
External resistance
internal resistance
Option 1)
This is incorrect.
Option 2)
This is incorrect.
Option 3)
This is incorrect.
Option 4)
This is correct.
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