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Physics-

General

Easy

Question

A galvanometer of 10 ohm resistance gives full scale deflection with 0.01 ampere of current. It is to be converted into an ammeter for measuring 10 ampere current. The value of shunt resistance required will be

$\frac{10}{999}$ ohm
0.1 ohm
0.5 ohm
1.0 ohm

The correct answer is: $fraction numerator 10 over denominator 999 end fraction$ ohm

$S equals fraction numerator i subscript g end subscript G over denominator i minus i subscript g end subscript end fraction equals fraction numerator 10 cross times 0.01 over denominator 10 minus 0.01 end fraction equals fraction numerator 10 over denominator 999 end fraction o h m$

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$l n invisible function application a capital delta A B C blank i f blank a to the power of 2 end exponent s i n invisible function application left parenthesis B minus C right parenthesis plus b to the power of 2 end exponent s i n invisible function application left parenthesis C minus A right parenthesis plus c to the power of 2 end exponent s i n invisible function application left parenthesis A minus B right parenthesis equals 0 blank comma blank t h e n text triangle is end text$

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