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Series and Parallel Combination of Resistors

An ammeter ha...

Question

An ammeter having resistance $R_{0}$ shows full deflection when current I flows from it. What resistance should be connected to it in series so that it shows deflection $\frac{I}{n}$ when same current flows.

A

\frac{R o}{n}

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B

Ro (n-1)

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C

\frac{R o}{(n + 1)}

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D

None of these

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Solution

The correct option is B Ro (n-1)

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