AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

In a galvanometer there is a deflection of 10 divisions per mA. The initial resistance of galvanometer is $60 Ω$ . If a shunt of $2.5 Ω$ is connected to the galvanometer and there are 50 divisions in all, on the scale of galvanometer , what maximum current this galvanometer can read?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

111 mA

170 mA

125 mA

150 mA

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

As the galvanometer has 50 divisons current required to produce full scale deflection

$I_{g} = \frac{1}{10} \times 50 m A = 5 m A = 0.005 A$

$R_{g} = 60 Ω; R_{s} = 2.5 Ω$
Let i be the max current

$I_{g} = i (\frac{R}{R_{g} + R_{s}})$
$5 \times 10^{- 3} = i . (\frac{2.5}{60 + 2.5})$

$i = \frac{62.5 \times 5 \times 10^{- 3}}{2.5} = 125 m A$

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!