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Question
In an ammeter 0.2 % of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be ____________.
Options
`1/499 "G"`
`499/500 "G"`
`1/500 "G"`
`500/499 "G"`
MCQ
Fill in the Blanks
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Solution
In an ammeter 0.2 % of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be `1/500 "G"`.
Explanation:
`"n" ="I"/"I"_"g" = 100/0.2 = 500`
`therefore "R" = "G"/"n"`
` = "G"/500`
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