A moving coil galvanometer has a resistance of 10
and full scale deflection of 0.01A. It can be converted into voltmeter of 10V full scale by connecting into resistance of
a)
9.90
is series
b)
10
in series
c)
990
in series
d)
0.10
in series
A moving coil galvanometer has a resistance of 10 and full scale deflection of 0.01A. It can be converted into voltmeter of 10V full scale by connecting into resistance of
a)
9.90 is series
b)
10 in series
c)
990 in series
d)
0.10 in series
Question ID - 152005 | SaraNextGen Top Answer
A moving coil galvanometer has a resistance of 10 and full scale deflection of 0.01A. It can be converted into voltmeter of 10V full scale by connecting into resistance of
a)
9.90 is series
b)
10 in series
c)
990 in series
d)
0.10 in series
|
A moving coil galvanometer has a resistance of 10 |
|||||||
|
a) |
9.90 |
b) |
10 |
c) |
990 |
d) |
0.10 |
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Let G be resistance of galvanometer and 
the current through it. Let V is maximum potential difference, then from Ohm’s law
.png)
Given 
Thus, on connecting a resistance R of 990 
in series with the galvanometer, the galvanometer will become a voltmeter of range zero to 10V.
127 votes
Answer Link
127