A voltmeter of range 2V and resistance 300 - connot be converted into ammeter of range

The correct option is D 1 mA l_g=2300A=2300× 1000 mA =203mA= 6.67 mA As range of ammeter cannot be decreased but can be increased only. Therefore, ...

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Standard XII

Physics

Thermal Expansion

A voltmeter o...

Question

A voltmeter of range 2V and resistance $300 Ω$ connot be converted into ammeter of range

1 A

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1 mA

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100 mA

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10 mA

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Solution

The correct option is D 1 mA
$l_{g} = \frac{2}{300} A = \frac{2}{300} \times 1000 m A$
$= \frac{20}{3} m A = 6.67 m A$
As range of ammeter cannot be decreased but can be increased only. Therefore, the Instrument cannot be converted to measure the range 1 mA.

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A voltmeter of range 2V and resistance 300Ω connot be converted into ammeter of range

The correct option is D 1 mAlg=2300A=2300×1000mA=203mA=6.67mAAs range of ammeter cannot be decreased but can be increased only. Therefore, the Instrument cannot be converted to measure the range 1 mA.

A voltmeter of range 2V and resistance $300 Ω$ connot be converted into ammeter of range

The correct option is D 1 mA
$l_{g} = \frac{2}{300} A = \frac{2}{300} \times 1000 m A$
$= \frac{20}{3} m A = 6.67 m A$
As range of ammeter cannot be decreased but can be increased only. Therefore, the Instrument cannot be converted to measure the range 1 mA.