JEE Main 2020 (8 Jan, Shift 2) Physics Q20: A galvanometer…

Question

A galvanometer having a coil resistance

100\ \Omega

gives a full scale deflection when a current of

1\ \mathrm{mA}

is passed through it. What is the value of the resistance which can convert this galvanometer into a voltmeter giving full scale deflection for a potential difference of

10\ \mathrm{V}

?

(1) $8.9\ \mathrm{k\Omega}$
(2) $9.9\ \mathrm{k\Omega}$ Official answer
(3) $7.9\ \mathrm{k\Omega}$
(4) $10\ \mathrm{k\Omega}$

Official answer

Option 2

NTA final key (Jan 2020).

Accepted Answer

Option 2: $9.9\ \mathrm{k\Omega}$

Answer

$8.9\ \mathrm{k\Omega}$

Answer

$9.9\ \mathrm{k\Omega}$

Answer

$7.9\ \mathrm{k\Omega}$

Answer

$10\ \mathrm{k\Omega}$

JEE Main 8 January 2020, Shift 2, Physics Q20