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.

admin:

Related Questions

  1. Two coherent sources of intensity ratio α interfere. In interference pattern,
  2. The output of OR gate is 1(one)
  3. A ball is dropped into a well in which the water level is at a depth h below the top
  4. A step-down transformer has 50 turns on secondary and 1000 turns on primary winding.
  5. The mean distance between the atoms of iron is 3 x 10⁻¹⁰ m and interatomic force