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 point charge q is situated at a distance r on axis from one end of a thin
  2. Pick out the statement ehich is incorrect?
  3. An electron in the hydrogen atom jumps from excited state n to the ground state
  4. In the Young’s modulus experiment, if length of wire and radius both are doubled,
  5. Periodic time of a satellite revolving above Earth’s surface at a height equal to R,