A millivoltmeter of 25 mV range is to be converted into an ammeter of 25 A range. The value (in ohm) of necessary shunt will be

0.001

0.01

1

0.05

Solution

0.001

The full-scale deflection current
$straight i subscript straight g equals space fraction numerator 25 space mV over denominator straight G end fraction space ampere$
Where G is the resistance of the meter. The value of shunt required for converting it into ammeter of range 25 A is
$space straight S space equals space fraction numerator straight i subscript straight g straight G over denominator straight i minus straight i subscript straight g end fraction so space that comma space straight S space equals space fraction numerator 25 space mV over denominator 25 end fraction space equals space 0.001 space straight capital omega$

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Current Electricity

A millivoltmeter of 25 mV range is to be converted into an ammeter of 25 A range. The value (in ohm) of necessary shunt will be

0.001

0.01

1

0.05

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Current Electricity

A millivoltmeter of 25 mV range is to be converted into an ammeter of 25 A range. The value (in ohm) of necessary shunt will be 0.001 0.01 1 0.05

Some More Questions From Current Electricity Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

A millivoltmeter of 25 mV range is to be converted into an ammeter of 25 A range. The value (in ohm) of necessary shunt will be

0.001

0.01

1

0.05