MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Galvanometer

A Galvanomete...

Question

A Galvanometer has resistance G ohms and a range of I A. The value of parallel shunt resistance connected to the ammeter to increase its range to nI A is

Open in App

Solution

Given : $I^{'} = n I$ $I_{g} = I$
$V_{A B} = V_{C D}$ $⟹$ $I_{g} G = (I^{'} - I_{g}) S$
$∴$ $I G = (n I - I) S$ $⟹ S = \frac{G}{n - 1}$

Suggest Corrections

thumbs-up

0

Similar questions

Q. An ammeter has a resistance of

G

ohms and range of

I

amperes. The value of resistance required in parallel to convert it into an ammeter of range

n I

Q. An ammeter has a resistance of G ohm and a range of I amp. The value of resistance used in parallel to convert it into an ammeter of range nI amp is

Q. An ammeter has a resistance of G ohm and a range of ‘i’ ampere. The value of resistance used in parallel, to convert into an ammeter of range ‘ni’ ampere is

Q. To convert a galvanometer into an ammeter a small resistance

S

(called the shunt) is connected in parallel with a galvanometer. A galvanometer has resistance

G

and full scale deflection current

i

. To convert this galvanometer into an ammeter of range 10 i, a shunt

S = \frac{G}{9}

is connected in parallel with G.

Now we want to measure the potential difference with the help of this ammeter. The maximum value of potential difference which can be measured with the help of this is:

Q. A galvanometer has a resistance of

16 Ω

.It shows full scale deflection, when a current of

20 m A

is passed through it. The only shunt resistance available is

0.06 Ω

which is not appropriate to convert a galvanometer into an ammeter. How much resistance should be connected in series with the coil of galvanometer so that the range of ammeter is

8 A ?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Electrical Instruments

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon