Navigate

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

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

Options

(a) 1A
(b) 1mA
(c) 100mA
(d) 10mA

Correct Answer:

1mA

Explanation:

Ig = (2 / 300) A = (2 / 300) × 1000 mA = (20 / 3) mA
Therefore, 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.

ML2012
admin:

Related Questions

  1. A ray of light travelling in a transparent medium of refractive index µ, falls on surface
  2. In circular coil, when number of turns is doubled and resistance becomes 1/4th
  3. which of the following statement is false for the properties of electromagnetic waves?
  4. A boy standing at the top of a tower of 20m height drops a stone
  5. Two spherical nuclei have mass numbers 216 and 64 with their radii R₁ and R₂,