A voltmeter of resistance 400 Ω Ω is used to measure the potential difference across the 100 Ω Ω resistor in the circuit shown in the figure.
A
What will be the reading of the voltmeter?
B
What was the potential difference across 100 Ω Ω before the voltmeter was connected? 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
[ 24 V, 28 V]
Sol.
R eff = 
+ 200
R eff = 280 Ω Ω
i = 
A.
V = 
× 
= 24 V
i = 
V = 
× 100 = 28 V
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