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A voltmeter of range 2 V and resistance ...

A voltmeter of range 2 V and resistance `300 Omega` cannot be converted into ammeter of range

A

`1A`

B

`1mA`

C

`100mA`

D

`10mA`

Text Solution

Verified by Experts

The correct Answer is:
B
Current through the voltmeter,
`l_(g)=2/300A=2/300xx1000mA`
`=20/3mA`
`l_(g)=6.67mA`
As range of ammeter cannot be decreased but can be increased only, therefore the instrument cannot be converted to measure the range `1mA`.
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