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Physics
Physics
Problem
Which of the following ratios equals the electrical resistance
R
R
R
of a conductor kept at constant temperature? a)
2
V
I
\dfrac{2V}{I}
I
2
V
b)
V
2
2
P
\dfrac{V^{2}}{2P}
2
P
V
2
c)
V
I
\dfrac{V}{I}
I
V
d)
P
2
I
2
\dfrac{P}{2I^{2}}
2
I
2
P
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