A galvanometer having a resistance of 20 and 30 divisions on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is :
a. |
80 |
b. |
120 |
c. |
125 |
d. |
100 |
A galvanometer having a resistance of 20 and 30 divisions on both sides has figure of merit 0.005 ampere/division. The resistance that should be connected in series such that it can be used as a voltmeter upto 15 volt, is :
a. |
80 |
b. |
120 |
c. |
125 |
d. |
100 |
Rg = 200
NL = NR = N = 30
FOM = = 0.005 A/Div.
Current sentivity = CS = =
Igmax = 0.005 × 30
= 15 × 10−2 = 0.15
15 = 0.15 [20 + R]
100 = 20 + R
R = 80
The circuit shown below contains two ideal diodes, each with a forward resistance of 50. If the battery voltage is 6 V, the current through the 100
resistance (in Amperes) is :-
a. |
0.027 |
b. |
0.020 |
c. |
0.030 |
d. |
0.036 |
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