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

Question

A voltmeter of range 2V and resistance 300 Q cannot be converted into ammeter of range (A) 1 A (B) 1 mA (C) 100 mA (D) 10 mA

Tardigrade Admin · Accepted Answer

Ig=(2/300)A =(2/300)× 1000 mA =(20/3) mA Ig=6.67 mA As range of ammeter cannot be decreased but can be increased only, therefore, the instrument cannot be converted to measure the range 1 mA.

Q. A voltmeter of range 2V and resistance 300 Q cannot be converted into ammeter of range

1 A

1 mA

100 mA

10 mA

$I_{g} = \frac{2}{300} A$ $= \frac{2}{300} \times 1000 m A$ $= \frac{20}{3} m A$ $I_{g} = 6.67 m A$ As range of ammeter cannot be decreased but can be increased only, therefore, the instrument cannot be converted to measure the range 1 mA.

Q. A voltmeter of range 2V and resistance 300 Q cannot be converted into ammeter of range

1 A

1 mA

100 mA

10 mA

Ig​=3002​A =3002​×1000mA =320​mA Ig​=6.67mA As range of ammeter cannot be decreased but can be increased only, therefore, the instrument cannot be converted to measure the range 1 mA.

$I_{g} = \frac{2}{300} A$ $= \frac{2}{300} \times 1000 m A$ $= \frac{20}{3} m A$ $I_{g} = 6.67 m A$ As range of ammeter cannot be decreased but can be increased only, therefore, the instrument cannot be converted to measure the range 1 mA.