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 ____________.

विकल्प

• `1/499 "G"`

• `499/500 "G"`

• `1/500 "G"`

• `500/499 "G"`

Answer 1

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`