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JEE Main 12 Apr 2019 Paper 2 Solved Paper

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Question : 6

Total: 90

A moving coil galvanometer, having a resistance G, produces full scale deflection when a current Ig flows through it. This galvanometer can be converted into (i) an anometer of range 0 to I0 (I0<Ig ) by connecting a shunt resistance RA to it and connecting a shunt resistance RA to is and (ii) into a voltmeter of range 0 to V (V=GI0 ) by connecting a series of resistance RV to it. Then,

RARV=G2 (
Ig
I0−Ig
) and
RA
RV
= (
I0−Ig
Ig
)2
RARV=G2 (
Ig
I0−Ig
) and
RA
RV
=(
Ig
(I0−Ig )
)2
RARV=G2 and
RA
RV
= (
Ig
I0−Ig
)2
RARV=G2 and
RA
RV
=
Ig
(I0−Ig )

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