As the galvanometer limit is 1mA we need to find the voltage drop across it’s to measure the voltage. For that we will replace the galvanometer with a resistance equal to its internal resistance.
The maximum voltage drop across the 10Ω resistance will be,
V = 10 × 10-3 v
So, D point should not exceed 10-2v.
Using kcl in the branch AD
= 2 kΩ
Now, from BD we get
From CD we get
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