Current Electricity Charging Discharging Of Capacitors Question 220

Question: The current flowing through a coil of resistance 900 ohms is to be reduced by 90%. What value of shunt should be connected across the coil

[Roorkee 1992]

Options:

A) $ 90,\Omega $

B) $ 100,\Omega $

C) $ 9,\Omega $

D) $ 10,\Omega $

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Answer:

Correct Answer: B

Solution:

Q $ i _{g}=(100-90)% $ of $ i=\frac{i}{10} $

Therefore Required shunt $ S=\frac{G}{(n-1)}=\frac{900}{(10-1)}=100,\Omega $