82.) On connecting a shunt of 10 2, the deflection in a
moving coil galvanometer falls from 40 divisions to 6
divisions. The resistance of the galvanometer is
120
(1)
Ω
3
(2)
30
Ω
7.
170
150
(3)
Ω
3
(4) Ω
7
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2
Answer:
=18Ω
Explanation:
In parallel current distributes in increase ratio of resistance
∴IGIs=SG
∴G=(IsIG)(S)
=(50−2020)(12)
=18Ω
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