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A milliammeter of range 10 mA and resist...

A milliammeter of range `10 mA` and resistance `9 Omega` is joined in a circuit as shown. The metre gives full-scale deflection for curretn `I` when `A` and `B` are used as its terminals, i.e., current enters at `A` and leaves at `B` (`C` is left isolated). The value if `I` is

A

`100 mA`

B

`900 mA`

C

`1A`

D

`1.1 A`

Text Solution

Verified by Experts

The correct Answer is:
C
`10xx10^(-3)=0.1/((9.9+0.1))xxI`
`I=1` Amp.
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