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It is desired to convert a 0-10 mA meter movement, with an internal resistance of 100 ohms, into a 0-1000 mA meter. The required value of shunt resistance is about
- A0.1 ohms
- B1 ohms
- C99 ohms
- D100 ohms
Answer not set
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CCommunity
Given that, full scale deflection current (IFSD) = 100 mA
Galvanometer resistance (Rm) = 100 Ω
Required full scale reading (I) = 1000 A
Rm = Internal resistance of the coil
Rsh = Parallel resistance
I = required full-scale reading
Im = Full-scale reading of the meter
Galvanometer resistance (Rm) = 100 Ω
Required full scale reading (I) = 1000 A
Rm = Internal resistance of the coil
Rsh = Parallel resistance
I = required full-scale reading
Im = Full-scale reading of the meter