A voltmeter of resistance 2000 Ω , 0.5 V/div is to be converted into a voltmeter to make it to read2V/div. The value of high resistance to be connected in series with it is

Question

A voltmeter of resistance 2000 Ω , 0.5 V/div is to be converted into a voltmeter to make it to read2V/div. The value of high resistance to be connected in series with it is (A) 6000 Ω  (B) 4000 Ω  (C) 5000 Ω  (D) 1000 Ω

Tardigrade Admin · Accepted Answer

Here, V= text 2V/div, text Vg= text 0.5V/div, text G=2000 text Ω Using the relation V=nVg ⇒ 2=n× 0.5 ⇒ n=4 Now, the high resistance is to be connected in series. It is given by R = G (n -1) = 2000 (4 -1) =6000 Ω

Q. A voltmeter of resistance 2000 $Ω$ , 0.5 V/div is to be converted into a voltmeter to make it to read2V/div. The value of high resistance to be connected in series with it is

6000 $Ω$

4000 $Ω$

5000 $Ω$

1000 $Ω$

Here, $V = 2 V / d i v, V_{g} = 0 .5 V / d i v, G = 2000 Ω$ Using the relation $V = n V_{g}$ $\Rightarrow$ $2 = n \times 0.5$ $\Rightarrow$ $n = 4$ Now, the high resistance is to be connected in series. It is given by R = G (n -1) = 2000 (4 -1) $= 6000 Ω$

Q. A voltmeter of resistance 2000 Ω , 0.5 V/div is to be converted into a voltmeter to make it to read2V/div. The value of high resistance to be connected in series with it is

6000 Ω

4000 Ω

5000 Ω

1000 Ω