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This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements. \[\] Statement- I: Higher the range, greater is the resistance of ammeter. \[\] Statement- II: To increase the range of ammeter, additional shunt needs to be used across it.

$\begin {array} {1 1} (A)\;Both \: the \: statements \: are\: true,\: Statement – II\: is\: not \:the\: correct\: explanation\: of\: Statement–I. \\  (B)\; Statement – I \: is \: true,\: statement – II\: is\: false. \\ (C)\; Statement – I \: is\: false, \: Statement – II \: is\: true \\ (D)\; Both\: the \: statements \: are\: true,\: Statement – II\: is \: the\: correct\: explanation \: of\: statement- I \end {array}$


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The answer follows from basic principle of a shunt and its use to make an ammeter.
$ S = \large\frac{Ig}{I-Ig} $ $\times G$
Ans : (C)
answered Feb 8, 2014 by thanvigandhi_1
edited Mar 14, 2014 by thanvigandhi_1

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