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Which of the following is the correct se...

Which of the following is the correct set-up for studying the dependence of the current on the potential difference across a resistor and why?

Text Solution

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A' is a correct set-up.
The ammeter must be connected in series between the battery and the resistor. The voltmeter should be put in parallel across the resistor. All the polarities must also be correct.
Set-up 'A' satisfies all these, so it is correct set-up.
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