Question

The fraction of the total current I of galvanometer is​

Answer 1

Answer:

Galvanometer resistance R

g

=r

Shunt resistance R

s

=

r

1

Using I=I

g

(1+

R

s

R

g

)

So, fraction of total current passing through galvanometer

I

I

g

=

R

s

+R

g

R

s

⟹

I

I

g

=

(1/r)+r

1/r

=

1+r

2

1