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In the given circuit the potential difference between a & b is 300 V. The resistors are of 100 $Ω$ each.

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If the upper meter M₁ is ideal voltmeter & lower meter is ideal ammeter M₂, reading of voltmeter is 300V.

If both meters are ideal ammeters, they read 6A each.

If both meters are ideal voltmeters, they show 200V each.

If the upper meter M₁ is ideal voltmeter and lower meter is ideal ammeter M₂, reading of ammeter is 3A.

answer is A, B, C, D.

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Detailed Solution

Ideal voltammeter ( $R_{v}$ = $\infty$ )

Ideal ammeter = (RA = 0)

(A) Reading = 300V.

(B) $i = \frac{300}{300} = 1 A$

V1 = 100 + 100 = 200V
V2 = 100 + 100 = 200V

(D) Reading of ammeter is 6A

$i = \frac{300}{100} = 3 A$

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