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Physics
A galvanometer may be converted into ammeter or a voltmeter. Resistance of the device so obtained will be the largest in the case of
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Q. A galvanometer may be converted into ammeter or a voltmeter. Resistance of the device so obtained will be the largest in the case of
A
Ammeter of range 1A
9%
B
Ammeter of range 10A
13%
C
Voltmeter of range 1V
15%
D
Voltmeter of range 10V
63%
Solution:
$R= \frac{V}{I_g} - G$
Thus, R is large when V is large.