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Question
Physics
Of the following graphs, the one that correctly represents the I-V. characteristics of a ‘Ohmic device’ is
Q. Of the following graphs, the one that correctly represents the
I
−
V
. characteristics of a ‘Ohmic device’ is
2377
208
KCET
KCET 2017
Current Electricity
Report Error
A
4%
B
17%
C
69%
D
10%
Solution:
Ohmic devices obey ohm's law
V
=
I
R
where
R
is constant.
<
b
r
/
>⟹
I
∝
V
<
b
r
/
>
Thus
I
−
V
characteristics is a straight line having a non-zero slope passing through origin.