To decrease the range of an ammeter its...

To decrease the range of an ammeter its resistance need to be increased an ammeter has resistance `R_(0)` and range `I` which of the following resistance can be connected in series with it to decrease its range to `I//n`

`R_0/(n+1)`

`R_0/(n-1)`

`R_0/n`

None of these

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The correct Answer is:

The range of the ammeter cannot be decreased either by joining a resistance in series or in parallel. The range can be increased.

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