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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.

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

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)
edited Mar 14, 2014