(C) To convert a galvanometer into an ammeter,a shunt resistance $S$ must be connected in parallel with the galvanometer.The formula for the shunt res

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putting in parallel a resistance of $15\,\Omega$

(C) To convert a galvanometer into an ammeter,a shunt resistance $S$ must be connected in parallel with the galvanometer.The formula for the shunt resistance is $i_g G = (I - i_g) S$,where $i_g$ is the full-scale deflection current,$G$ is the galvanometer resistance,and $I$ is the maximum current to be measured.Given: $G = 60\,\Omega$,$i_g = 1.0\,A$,and $I = 5.0\,A$.Substituting the values: $1.0 \times 60 = (5.0 - 1.0) \times S$.$60 = 4 \times S$.$S = \frac{60}{4} = 15\,\Omega$.Therefore,a resistance of $15\,\Omega$ must be connected in parallel.

Class 12 Physics Moving Charges and Magnetism The Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion

Medium

$A$ galvanometer having a coil resistance of $60\,\Omega$ shows full-scale deflection when a current of $1.0\,A$ passes through it. It can be converted into an ammeter to read currents up to $5.0\,A$ by:

AIPMT 2009 All AIPMT

A
putting in series a resistance of $15\,\Omega$
B
putting in series a resistance of $240\,\Omega$
C
putting in parallel a resistance of $15\,\Omega$
D
putting in parallel a resistance of $240\,\Omega$

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Moving Charges and Magnetism

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The Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion

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MediumKCET 2008

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In an ammeter,$5 \%$ of the main current passes through the galvanometer. If the resistance of the galvanometer is $G$,the resistance of the ammeter will be:

DifficultJEE MAIN 2024

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$A$ moving coil galvanometer has $150$ equal divisions. Its current sensitivity is $10$ divisions per milliampere and voltage sensitivity is $2$ divisions per millivolt. In order that each division reads $1 \, V$,the resistance in $\Omega$ needed to be connected in series with the coil will be

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$A$ galvanometer having a coil resistance of $60\,\Omega$ shows full-scale deflection when a current of $1.0\,A$ passes through it. It can be converted into an ammeter to read currents up to $5.0\,A$ by:

Similar Questions

Two tangent galvanometers $A$ and $B$ are identical except in their number of turns. They are connected in series. On passing a current through them,deflections of $60^{\circ}$ and $30^{\circ}$ are produced. The ratio of the number of turns in $A$ and $B$ is

$A$ galvanometer,whose resistance is $50\, \Omega$,has $25$ divisions. When a current of $4 \times 10^{-4}\, A$ passes through it,its needle deflects by one division. To use this galvanometer as a voltmeter of range $2.5\, V$,it should be connected to a resistance of ....... $\Omega$.

There are three voltmeters of the same range but of resistances $10000\,\Omega$,$8000\,\Omega$,and $4000\,\Omega$ respectively. The best voltmeter among these is the one whose resistance is ................ $\Omega$.

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$A$ moving coil galvanometer has $150$ equal divisions. Its current sensitivity is $10$ divisions per milliampere and voltage sensitivity is $2$ divisions per millivolt. In order that each division reads $1 \, V$,the resistance in $\Omega$ needed to be connected in series with the coil will be

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