Advertisements
Advertisements
Question
The resistance of an ammeter is 13 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 ______.
Options
2 Ω
0.2 Ω
2 kΩ
20 Ω
MCQ
Fill in the Blanks
Advertisements
Solution
The resistance of an ammeter is 13 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 2 Ω.
Explanation:
We know
`"I"/"I"_"S"=1+"G"/"S"`
`750/100=1+13/"S"`
S ⇒ 2 Ω
shaalaa.com
Is there an error in this question or solution?
