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Q.

Two setups have been shown in Figures (A) and (B) to study the dependence of current (I) and potential difference (V) across the resistor. Is it true that the reading of the ammeter and voltmeter will be lowest when the contact J is in (a) for setup (A) and (d) for setup (B)?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
In fig (A), the reading of the ammeter and the voltmeter will be lowest if J is connected to point (a), as the sum of the power of the battery will be lowest. And for fig (B) reading of the ammeter and the voltmeter will be minimum if J is connected to point (d) because of the highest interference of resistors in between and the combination of the power of the battery.

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Two setups have been shown in Figures (A) and (B) to study the dependence of current (I) and potential difference (V) across the resistor. Is it true that the reading of the ammeter and voltmeter will be lowest when the contact J is in (a) for setup (A) and (d) for setup (B)?