The resistance of an ammeter is 13 Ω Ω and its scale is graduated for a current upto 100 amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 amperes by this meter. The value of shunt-resistance is:-
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the shunt resistance be S .
Given: 
,
From the figure,
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The current through the ammeter shown in figure is 1 A. If each of the 4 Ω Ω resistor is replaced b…
The meter-bridge wire AB shown in figure is 50 cm long. When AD = 30 cm, no deflection occurs in th…
The potential gradient of a potentiometer wire is defined as
The unit of potential gradient is
The length of the potentiometer wire is kept larger so that the value of potential gradient may
For the same potential difference, a potentiometer wire is replaced by another one of a high specif…